A spherical ball of lead 3 cm in diameter is melted and recast into three spherical balls The diameter of two of these are 1.5 cm and 2 cm respectively. The diameter of the third ball is 

If two complimentary angles are in the ratio of 4:5, find the greater angle.

Of the three numbers whose average is 60, the first is one-fourth of the sum of the whole number. The first number is: 

The following chart depicts the percentage of Educated  and Uneducated men and women in a city with a population of 2,50,000.

Differentiate between the number of Educated males and Educated females.

The product of two numbers is 45 and their difference is 4. The sum of squares of the two numbers is

If x + y = 1 and xy (xy – 2) = 12,then the value of x⁴ + y⁴ is:

P and Q can do a piece of work in 12 days, Q and R can do a piece of work in 15 days and R and P can do a piece of work in 20 days. Q alone can do the whole work in

A Man rows to a place 63 km far and comes back in 16 hours. He finds that he can row 18 km with the flow in the same time taken to row 14 km against the flow. What is the speed of the stream?