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If a: b = 3:4, b:c = 7:9, c:d = 5:7, find a:d?

Question 1:

If a: b = 3:4, b:c = 7:9, c:d = 5:7, find a:d?

A. 5:12

Feedback a/d = (3/4)*(7/9)*(5/7) => 5/12

B. 7:12

C. 3:11

D. 5:11

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Practice ration and propotions Online Test 1 | Englishfreetest.com

20 minutes
10 questions