Home
Class 12
MATHS
An aeroplane files around a square, the ...

An aeroplane files around a square, the sides of which measure 100 miles each. The aeroplane covers at a speed of 100 mph the first side, at 200 mph the second side, at 300 mph the third side and 400 mph the fourth side. The average speed of the aeroplane around the square is

A

190 mph

B

195 mph

C

192 mph

D

200 mph

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MEASURES OF DISPERSION (STATISTICS)

    AAKASH SERIES|Exercise Exercise - II|32 Videos

  • MEAN VALUE THEOREMS

    AAKASH SERIES|Exercise EXERCISE|28 Videos

  • PARABOLA

    AAKASH SERIES|Exercise EXERCISE -3.2 III.|5 Videos

Similar Questions

Explore conceptually related problems

A path 5m wide runs around a square park of side 100m find the area of the path. Also find the cost of cementing it at the rates of ₹250 per 10m^2 .

Four particles each of mass 100g are placed at the corners of a square of side 10 cm. Find the moment of inertia of the system about an axis passing through the centre of the square and perpendicular to its plane. Find also the radius of gyration of the system.

There is a tower beside the road, Rahim standing at the top of the tower observes two cars A and B on either side of the tower at an anglea of depression 30^@ and 60^@ are approaching the foot of the tower with a uniform speed of 10m/sec and 5m/sec respe ctviely.If the height of the tower is 100sqrt 3 , then find the whihc car reaches the tower first and how many seconds the other car is late by the first one.

AAKASH SERIES-MEASURES OF DISPERSION (STATISTICS)-Practice Exercise
  1. Mean deviation of 39,40,41,41,42,42,43,43,44,44, 45 through median is

    Text Solution

    |

  2. Mean deviation from median of the data 90,100,125,115, 110 is

    Text Solution

    |

  3. The mean deviation from mean of the data 90,100,125,115,110 is

    Text Solution

    |

  4. The standard deviation of 7 scores 1,2,3,4,5,6,7 is

    Text Solution

    |

  5. The standard deviation of 15 items is 6 and each item is decreased by ...

    Text Solution

    |

  6. The standard deviation for the set of the numbers 1,4,5,7,8 is 2.45. I...

    Text Solution

    |

  7. Standard deviation of 5,8,11,9,11 is

    Text Solution

    |

  8. If the standard deviation of x(1),x(2),….,x(n) is 3.5 then the standar...

    Text Solution

    |

  9. If the standard deviation of 0,1,2,3,4,5,6,7,8,9 is K, then the standa...

    Text Solution

    |

  10. The variance of first 20 - natural numbers is

    Text Solution

    |

  11. The variance of 6,8,10,12,14,16,18,20,22,24 is

    Text Solution

    |

  12. Observe the following statements : (A) : 10 is the mean of a set of ...

    Text Solution

    |

  13. A man motors from A to B. A large part of the distace is uphill and he...

    Text Solution

    |

  14. An aeroplane files around a square, the sides of which measure 100 mil...

    Text Solution

    |

  15. The mean of a data set consisting of 20 observation is 40. If one obse...

    Text Solution

    |

  16. Mean of 100 observations is 50 and S.D. is 10. If 5 subtracted from ea...

    Text Solution

    |

  17. Consider the following statements : (i) Mean of 100 observations is ...

    Text Solution

    |

  18. I. The geometric mean of 2,4,16 and 32 is a II. The strength of 7 co...

    Text Solution

    |

  19. If the mean deviation of number 1,1+d,…1+100d from their mean is 255, ...

    Text Solution

    |

  20. The mean of 5 observations is 5 and their variance is 124. If three of...

    Text Solution

    |