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Multiplication of Fractions

If A : B = ...

Question

If $A : B = 3 : 4$ and $B : C = 8 : 9$ , then $A : B : C$ is

8 : 6 : 9

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9 : 8 : 6

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6 : 8 : 9

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3 : 32 : 9

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Solution

The correct option is D $6 : 8 : 9$
$\frac{A}{B} = \frac{3}{4} 6 \frac{B}{C} = \frac{8}{9}$ $\frac{A}{B} = \frac{3}{4} = \frac{6}{8}$
$\Rightarrow A : B : C = 6 : 8 : 9$

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a : b : c .

If A:B = $\frac{1}{2} : \frac{3}{8}$ , B:C = $\frac{1}{3} : \frac{5}{9}$ and C:D = $\frac{5}{6} : \frac{3}{4}$ , then the ratio A:B:C:D is

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A : B : C : D

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