Lessons

General Aptitude
5.1 Percentage - General Questions

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Q.

A student multiplied a number by  3/5 instead of 5/3 What is the percentage error in the calculation?

View Answer

Correct choice: D

Explanation:

Let the number be x.

Then, error = 5 x - 3 x = 16 x.
3 5 15
Error% = 16x x 3 x 100 % = 64%.
15 5x
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