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

A 11

B 23

C 22

D 32

Correct Answer: Option B

(M + 2M + 3 + 3M - 5 + 5M + 1) / 4 = 63

or, (11M - 1) = 63 * 4

or, 11M = 252 + 1

or, 11M = 253

or, M = 253 / 11

or, M = 23