A student multiplied a number by 3/5 instead of 5/3. What is the percentage error in the calculation?	Choose the correct answer.
A) 34% B) 44% C) 54% D) 64% E) None of these
Explanation :   Let, the number be x.   According to the question, the error is :-   =&gt;(5x/3)−(3x/5).   =&gt;16x/5.   Hence, the percentage error is :-   =&gt;16x/15 /5x/3∗100.   =&gt;64%.   Answer : 64%
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A student multiplied a number by 3/5 instead of 5/3. What is the percentage error in the calculation?