If we add half a number to it we get 72 then the number is ………………… 

A) 38 

B) 48 

C) 64 

D) 90

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2 Answers

Correct option is  B) 48

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Correct option is (B) 48

Let the number be x.

\(\therefore\) \(x+\frac x2=72\)

\(\Rightarrow\) \(\frac{3x}2=72\)

\(\Rightarrow\) \(x=72\times\frac23=48.\)

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