A student multiplied a

Question

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

Options:

A . 34 %

B . 44 %

C . 54 %

D . 64 %

Answer: Option D

Let the number be `x` then , error =` 5/3 x - 3/5 x = 16/15 x`

Error % = `((16x)/(15) xx (3)/(5x) xx 100)%` = 64%

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