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Question

What is the value of x when 512:x::812:14?


A

1169

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B

1168

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C

1268

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D

1178

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Solution

The correct option is B

1168


512=112

812=172

So, 512:x::812:14

= 112:x::172:14

In a proportion, Product of means = product of extremes

x×172=112×14

17x2=118

17x=118×2

x=1168


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