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If a : b = 3 : 5 and b : c = 4 : 7 then a : c is equal to

Correct Answer: 12 : 35

Explanation:

Given that, a/b = 3/5, b/c = 4/7
∴ a/c = a/b x b/c = 3/5 x 4/7 = 12/ 35
&there4: a : c = 12 : 35


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