If the average of the four numbers M, 2M+3, 3M-5 and 5M+1 is 63, what is the value of M?

In a sequence of consecutive integers, how much greater is the sum of the last four integers than sum of first...

10 cats caught 10 rats in 10 seconds. How many cats are required to catch 100 rats in 100 seconds?

Two fifth of one fourth of three-seventh of a number is 15, What is the half of the number?

The avarage of 6 numbers in 25. If 3 more, with an average of 22 are added to these numbers, what will be the...

A, B,C enter into partnership , A invests 3 times as much as B invest and B invests two third of what C invest...

Rony and Jony are working on an assignment. Rony takes 6 hours to type 32 page on a computer, while Jony takes...