Krishna Kishore took one number. If he subtracts 7 from the 5/2th value of the number, he gets 11/2 as result then the number is ………………….
Krishna Kishore took one number. If he subtracts 7 from the 5/2th value of the number, he gets 11/2 as result then the number is ………………….
A) 9
B) 10
C) 5
D) 6
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Correct option is (C) 5
Let the number be x.
\(\therefore\) \(\frac52x-7=\frac{11}2\)
\(\Rightarrow\) \(\frac52x=\frac{11}2+7=\frac{11+14}2=\frac{25}2\)
\(\Rightarrow\) \(x=\frac{25}2\times\frac25=5.\)
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