If 7A = 6B = 12C, what is A : B : C?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 12 : 14 : 7.
7A = 6B = 12C = k
A = k/7, B = k/6, C = k/12
Ratio A:B:C = 1/7 : 1/6 : 1/12
L .C. M. of 7, 6, 12 = 84
Multiply each by 84:
A = 12, B = 14, C = 7
= 12 : 14 : 7