A contractor undertakes to make a road in 40 days and employs 25 men. After 24 days, he finds that only one- third of the road in made. How many extra men should he employ so that he is able to complete the work 4 days earlier?

The no of revolutions a wheel of diameter 40cm makes in travelling a distance of 176m is

The ratio of the length of the parallel sides of a trapezium is 3: 2. The shortest distance between them is 15 cm. If the area of the trapezium is 450 cm.2, the semi-sum of the length of the parallel sides is

The speed of train A is 16 km/h less than the speed of train B. To cover a distance of 384 km, B takes 4 hours less time than A. What is the speed (in km/h) of train B?

The median of 31, 25, 17, 23, 45 and 59 is:

ABCD is parallelogram. P and Q are the mid points of sides BC and CD respectively. If the area of ∆ABC is 12 cm² then the area of ∆APQ is 

Of the three numbers, the second is twice the first and it is also thrice the third. If the average of three numbers is 44, the difference of the first number and the third numbers is: 

Which of the following represents a correct proportion?