Home
Class 10
MATHS
A magnet school is a free public school ...


A magnet school is a free public school that has a fused theme. According to the table above, what was the increase in the total number of graduates in five of these magnet schools in District 1 from 2013 to 2014?

A

`25`

B

`30`

C

`35`

D

`40`

Text Solution

Verified by Experts

The correct Answer is:
A

Difficult: Easy
Category: Problem Solving and Data Analysis/ Statistics and Probability.
Strategic Advice: A question like this is as straightforward as it sounds - so be extra careful with your calculations and you are sure to get it correct.
Getting to the Answer: Don't try keep track of the changes in your head. Instead, jot them down to the right of the last column. Be sure to include a positive or negative sign to indicate whether each change is an increase or a decrease. Then add the changes to find the total increase

To add quickly, notice that the first two changes cancel each other, so the total increase is 20+5=25, which is (A).
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRY

    KAPLAN|Exercise TRIGONOMETRY FOLLOW - UP TEST|6 Videos

Similar Questions

Explore conceptually related problems

A certain school has 300 students, 142 of whom are boys. It has 30 teachers, 12 of whom are men. What percent of the total number of students and teachers in the school is female?

In a high school, a committee has to be formed from a group of 6 boys M_1,\ M_2,\ M_3,\ M_4,\ M_5,\ M_6 and 5 girls G_1,\ G_2,\ G_3,\ G_4,\ G_5 . Let alpha_1 be the total number of ways in which the committee can be formed such that the committee has 5 members, having exactly 3 boys and 2 girls. (ii) Let alpha_2 be the total number of ways in which the committee can be formed such that the committee has at least 2 members, and having an equal number of boys and girls. (iii) Let alpha_3 be the total number of ways in which the committee can be formed such that the committee has 5 members, at least 2 of them being girls. (iv) Let alpha_4 be the total number of ways in which the committee can be formed such that the committee has 4 members, having at least 2 girls and such that both M_1 and G_1 are NOT in the committee together. LIST-I LIST-II P. The value of alpha_1 is 1. 136 Q. The value of alpha_2 is 2. 189 R. The value of alpha_3 is 3. 192 S. The value of alpha_4 is 4. 200 5. 381 6. 461 The correct option is: P->4;\ \ Q->6;\ \ R->2;\ \ S->1 (b) P->1;\ \ Q->4;\ \ R->2;\ \ S->3 (c) P->4;\ \ Q->6;\ \ R->5;\ \ S->2 (d) P->4;\ \ Q->2;\ \ R->3;\ \ S->1

The table above gives the number of male and female students at Washington High School who are taking Advanced Placement (AP) classes and those who are not. What is the proportions of the total number of students at the school who are both male and NOT taking AP classes?

From the diagram given below: What will you observe when- (1) the magnet is dropped into the coil. (2) the number of turns of the coil is increased?

Figure shows five lettered regions in which a uniform magnetic field extends directly either out of the page (as in region a ) or into he page. The field is increasing in magnitude at the same steady rate in all five regions, the regions are identical in area. Also shows are four numbered paths along which oint vec(E). vec(dl) has the magnitudes given below in terms of a quantity mag. Determine whether the magnetic fields in regions b through e are directed into ot out of the page. ? |{:("Path",1,2,3,4),(oint vec(E).vec(dl),mag,2(mag),3(mag),0):}|

The following bar graph (Figure) represents the heights (in cm) of 50 students of Class XI of a particular school. Study the graph and answer the following questions: What percentage of the total number of students have their heights more than 149 cm? How many students in the class are in the range of maximum height of the class? The school wants to provide a particular type of tonic to each student below the height of 150cm to improve his height. If the cost of the tonic for each student comes out to be Rs. 55, how much amount of money is required? How many students are in the range of shortest height of the class? State whether true or false: There are 9 students in the class whose heights are in the range of 155-159 cm. Maximum height (in cm) of a student in the class is 17. There are 29 students in the class whose heights are in the range of 145-154 cm. Minimum height (in cm) of a student is the class is in the range of 140-144cms. The number of students in the class having their heights less than 150cm is 12. There are 14 students each of whom has height more than 154 cm.

In a certain school district , teachers are allowed to take three personal days, at full pay , during one school year. Here is a summary of the number of personal days taken by teachers in 2013-2014 . From this table you can accurately find I.the arithmetic mean of personal days taken II. The median number of personal days taken III. The mode of the number of personal days taken

Total number of students of a school in different years is shown in the following table: Year, No. of Students 1996 1998 2000 2002 2004, 400 550 450 600 650 Represent the above data by a pictograph. Prepare a pictograph of students using one symbol an icon of a student to represent 100 students and answer the following questions: How many symbols represent total number of students in the year 2002? How many symbols represent total number of students in the year 1998? Prepare another pictograph of students using any other symbol each representing 50 students. Which pictograph do you find more informative?

Paramagnetism is a property due to the presence of unpaired electrons. In case of transition metals, as they contain unpaired electrons in the (n-1) d orbitals , most of the transition metal ions and their compounds are paramagnetic. Para magnetism increases with increases in number of unpaired electrons. Magnetic moment is calculated from 'spin only formula' Vz mu=sqrt(n(n+2)) B.M n="number of unpaired electrons" Similarly the colour of the compounds of transition metals may be attributed to the presence of incomplete (n-1) d sub-shell. When an electron from a lower energy of d-orbitals is excited to a higher energy d-orbital, the energy of excitation corresponds to the frequency of light absorbed. This frequency generally lies in the visible region. The colour observed corresponds to complementary colour of the light observed. The frequency of the light absorbed is determined by the nature of the ligand. Titanium shows magnetic moments of 1.73 BM in its compound. What is the oxidation state of titanium in the compound?

The Betatron was the first important machine for producing high energy electrons. The action of the betatron depends on the same fundamental principle as that of the transformer in which an alternating current applied to a primary coil induces an altermating current usually with higher or lower voltage in the secondary coil. In the betatron secondary coil is replaced by a doughnut shaped vacuum chamber.Electron produced in the doughnut from a hot filament, are given a preliminary acceleration by the application of an electric field having potential difference of 20 kV to 70 kV , when an alternating magnetic field is applied parallel to the axis of the tube, two effects are produced (1) an electromotive force is produced in the electron orbit by the changing magnetic flux that gives an additional energy to the electrons (2) a radial force is produced by the action of magnetic field whose direction is perpendicular to the electron velocity. Which keeps the electron moving in a circular path. Conditions are arranged such that the increasing magnetic field keeps the electron in a circular orbit of constant radius. The mathematical relation between the betatron parameters to ensure the above condition is called BETATRON condition. If the orbit radius of the circular path traced by the electron is R , magnetic field is B , speed of the electron is v , mass of the electron is m , charge on the electron is e and phi is the flux within the orbit of radius R . Then answer the following questions based on the above comprehension. What is the BETATRON condition ?

KAPLAN-TWO-WAY TABLES, STATISTIC , AND PROBABILITY-Multiple Choice Question
  1. A magnet school is a free public school that has a fused theme. Accord...

    Text Solution

    |

  2. Many people shop online primarily because they get access to product ...

    Text Solution

    |

  3. Phase I clinical trails are run to determine the safely of all new dr...

    Text Solution

    |

  4. In a survey of 1,600 adults in the United States, 48% indicated that t...

    Text Solution

    |

  5. A medical practice surveyed a random sample of 80 patients to determin...

    Text Solution

    |

  6. Unemployment rates in the U.S. for the first four months of 2015 are ...

    Text Solution

    |

  7. Luge is a winter sport in which a person slides down an ice track feet...

    Text Solution

    |

  8. Frederick is a business major and is conducting a study to determine t...

    Text Solution

    |

  9. A study of gasoline prices across a particular state showed that the s...

    Text Solution

    |

  10. Brian and several of his work colleagues are on a kickball team togeth...

    Text Solution

    |

  11. The bar graph shows the result of a grammar quiz in a language arts cl...

    Text Solution

    |

  12. The average gas mileage for n vehicles on one car lot is 21 miles per ...

    Text Solution

    |

  13. Five numbers are given by expressions x, 2x-3, 2x+1, 3x-4 and 3x+1. If...

    Text Solution

    |

  14. According to the information in the table, which of the following corr...

    Text Solution

    |

  15. The table above summarizes strom activity in the Atlantic Ocean betwee...

    Text Solution

    |

  16. The students in an environmental science class will be randomly assing...

    Text Solution

    |

  17. The table above is a summery of prices for round-trip airplane tickets...

    Text Solution

    |

  18. Airlines C and F offer six nonstop flights each to San Francisco throu...

    Text Solution

    |

  19. The table above shows the distribution of vehicles at a used car lot b...

    Text Solution

    |

  20. Based on the table, if a single vehicles is selected at random from al...

    Text Solution

    |