A boy was asked to multiply a certain number by 25 He multiplied it by 52 and got his answer more by 324 than the correct answer The number to be multiplied was

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Solution

The correct option is B 12
Let the number is x
The if be multiply by 25 then correct answer =25x
But boy multiply with 52 then boys answer =52 x
As per question boy answer if more then 324 than correct answer
$∴ 52 x = 25 x + 324$
$\Rightarrow 52 x - 25 x = 324$
$\Rightarrow 27 x = 324$
$\Rightarrow x = 12$

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A boy was asked to multiply a certain number by 25 He multiplied it by 52 and got his answer more by 324 than the correct answer The number to be multiplied was

The correct option is B 12Let the number is xThe if be multiply by 25 then correct answer =25x But boy multiply with 52 then boys answer =52 xAs per question boy answer if more then 324 than correct answer ∴52x=25x+324⇒52x−25x=324⇒27x=324⇒x=12