the data a and b are equal to the data subtracted c ; the data b is 3 times the data a ; if the data a is equal to 12 what is the sum of the data a , b and c ? Choose the correct choice
A) 86  B) 92  C) 84  D) 102  E) 96

Rationale: the equations raised . a + b = c b = 3 a a = 12 then b = 36 and c = 48 a + b + c = 96 answer : e
Answer: E