Match the equivalent fractions and write another 2 for each: `(250)/(400)` `(180)/(200)` `(660)/(990)` `(180)/(360)` `(220)/(550)`

Write the three equivalent fractions for each: 2/(3)

Match the equivalent fractions and write two more for each. (i) 250/400 \ \ \ \ \ \ \ \ \ \ (a) 2/3 (ii)180/200 \ \ \ \ \ \ \ \ \ \ (b) 2/5 (iii) 660/990 \ \ \ \ \ \ \ \ \ \ (c) 1/2 (iv) 180/360 \ \ \ \ \ \ \ \ \ \ (d) 5/8 (v) 220/550 \ \ \ \ \ \ \ \ \ \ (e) 9/10

If the cost of 15 mangoes is Rs 180, then what is the cost of 25 mangoes? (a) 220 (b) 360 (c) 200 (d) 300

Write three equivalent fractions each for (2)/(3)and((-5))/(6) such that one of the equivalent rational numbers for each has denominator 36.

The difference between the interest obtained for Rs 1000 at 12% per annum for 3 years and that for Rs 1500 at 8% per annum for 1 1/2 years is (a) Rs 360 (b) Rs 300 (c) Rs 180 (d) Rs 200

A national math examination has 4 statics problems. The distribution of the number of students who ansered the question correctly is shown in the chart. If 400 students took the exam and each question was worth 25 points, then what is the average score of the students taking the exam? {:("Question Number","Number of students who solved the question"),(1,200),(2,304),(3,350),(4,250):}

A block of mass m_(1) = 20 kg as placed on a wedge of mass m_(2)= 30 kg rest on a smooth flooras shpwn in Fig (a) . Friction exists between block and wedge. a. Find the acceleration of each block if (i) F = 180 N and (ii) F = 400 N b. Solve the problem if force F = 180 N is direction upwards as shown in Fig (b)

Two parallel plates A and B are joined together to form a compound plate . The thicknesses of the plate are 4.0cm and 2.5cm respectively and the area of cross section is 100cm^(2) for each plate. The thermal conductivities are K_(A)=200Wm^(-1) C^(-1) for plate A and K_(B)=400Wm^(-1) C^(-1) for the plate B. The outer surface of the plate A is maintained at 100^(@)C and the outer surface of the plate B is maintained at 0^(@)C . Find (a) the rate of heat flow through any cross section, (b) the temperature at the interface and (c) the equivalent thermal conductivity of the compound plate.

Kamla has a triangular field with sides 240 m, 200 m, 360 m, where she grew wheat. In another triangular field with sides 240 m, 320 m, 400 m adjacent to the previous field, she wanted to grow potatoes and onions. She divided the field in two parts by joining the mid point of the longest side to the opposite vertex and grew potatoes in one part and onions in one part. How much area (in hectares) has been used for wheat,potatoes and onions? ( 1 hectare = 10000 m^2 )

Two identical speakers emit sound waves of frequency 660Hz uniformly in all directions. The audio output of each speaker is 1mW and the speed of sound in air. A point P is a distance 2m from one speaker and 3m from the other. If they are driven coherently but out of phase by 180^@ , the intensity at the point 'P' is