65% of a number is 21 less than (4/5) of that number. Find the number

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KPTCL Assistant Exam (Mescom) SLOT1 2017 click here to view all questions

65% of a number is 21 less than (4/5) of that number. Find the number.

A140

B233

C­140

D­233

Nithin K ? Oct 18 '2017 at 23:11

Answer is  :140 

Explanation:

Let the number be x.

Then,\( 4\times\frac{x}{5}–(\text{65% of x}) = 21\)

=> \(4\frac{x}{5}–65\frac{x}{100}=100\)=21

=> 15 x = 2100

=> x = 140.

 

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Answer is  :140  Explanation: Let the number be x. Then,\( 4\times\frac{x}{5}–(\text{65% of x}) = 21\) => \(4\frac{x}{5}–65\frac{x}{100}=100\)=21 => 15 x = 2100 => x = 140.   Nithin K ? answered Oct 18 '2017 at 23:11 All Comments

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