If a + b + c = 528, a : b = 23 : 14 and b : c = 28 : 22, the what is the value of a - c ?
Answer & explanation
Correct answer: option 4
a : b : c
23 : 14 (b × 2, to make b equal in both ratio)
28 : 22
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46 : 28 : 22 = 96R
⇒ 96R = 528 (given)
⇒ 1R = 5.5
⇒ Hence, a - c = 46 - 22 = 24R = 24 × 5.5 = 132