Question

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

Options

• 34%

• 44%

• 54%

• 64%

Answer 1

64%
Explanation :
Let the number be x.

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

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