in 15 year ’ s time the combined age of my 4 brothers will be 107 . what will it be in the 6 year ’ s time ?	Choose the most appropriate option.
A) 61
B) 78
C) 71
D) 68
E) 94

Rationale: c 71 combined age in 15 years = 107 . 4 × 15 = 60 , therefore combined age now is 107 – 60 = 47 . in 6 years time , therefore , combined age will be 47 + 24 ( 4 x 6 ) = 71 .
Answer: C