If a:b = 2:3, b:c = 4:5, and c:d = 6:7, find a:d.

A8 : 35

B16 : 35

C16 : 21

D24 : 35

Explanation

a/d = (a/b) * (b/c) * (c/d) = (2/3) * (4/5) * (6/7) = 48 / 105 = 16 / 35.

Exam Relevance

Topic: Ratio and Proportion
Subtopic: Compound Ratio

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