Question

5:12::11:?what number should be placed at question mark
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Answer 1

SOLUTION

GIVEN

5 : 12 :: 11 : ?

TO DETERMINE

The number should be placed at question mark

EVALUATION

Here it is given that 5 : 12 :: 11 : ?

Let x be number should be placed at question mark

So by the given condition

5 : 12 :: 11 : x

$\displaystyle \sf{ \frac{5}{12} = \frac{11}{x} }$

$\displaystyle \sf{ \implies \: 5x = 132 }$

$\displaystyle \sf{ \implies \: x = \frac{132}{5} }$

$\displaystyle \sf{ \implies \: x = 26.4 }$

Hence the required number should be placed at question mark is 26.4

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