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The product of 5% of a positive number a...

The product of 5% of a positive number and 2% of the same number is 211.6 . What is half of that number ?

A

230

B

460

C

920

D

115

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Let the number be x.
Then, according to the question ,
`(5x)/(100)xx(2x)/(100)=211.6`
or `x^(2)=(211.6xx100xx100)/(5xx2)=211600`
`:. X=460`
`:.` half of eight number =230
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