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

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

A 23

B 22

C 11

D 32

Solution

Correct Answer: Option A

(M+2M+3+3M-5+5M+1)/4=63
⇒ 11M-1=-252
⇒ 11M=253
⇒ M=23