Question 61

If A : B = 7 : 8 and B : C = 7 : 9, then what is the ratio of A : B : C ?

Solution
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Given, A : B = 7 : 8 -- (1)
B : C = 7 : 9 -- (2)
Multiplying (1) by 7 and (2) by 8
A : B = 49 : 56
B : C = 56 : 72
Therefore, A : B : C = 49 : 56 : 72.

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