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A Student Multiplied a Number by 3 5 Instead of 5 3 . Find the Error Percentage. - Mathematics

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MCQ

A student multiplied a number by `3/5` instead of `5/3`. Find the error percentage.

Options

  • 34%

  • 44%

  • 54%

  • 64%

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Solution

64%
Explanation :
Let the number be x.

Then, error = `5/3x-3/5x=16/15x`

Error percentage = `((16x)/15xx3/(5x)xx100)`% = 64%

 

Concept: Percentage, Discount and Partnership (Entrance Exam)
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