Question

a number when 35 is subtracted from it reduced to its 80% what is 4/5 of that number?

Answer 1

let that number be 'x '


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when 35 subtracted from it , then

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Find the new number:
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new number = ( x - 35 )


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express its reduced form:
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reduced number = 80% of x = 0.8x



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according to question,



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new number = reduced number



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x - 35 = 0.8x



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x - 0.8x = 35




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0.2x = 35 => 2x ÷ 10 = 35



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2x = 350 => x = 350 ÷ 2 = 175




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x = 175



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required number = 175

Find 4/ 5 of x:
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4 /5 of x = 4/ 5 of 175




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=( 4 × 175 ) / 5 = 140



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Answer: 4/ 5 of that number = 140
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