Question

A teacher reduced the total mark of a student from 65 to 54 for cheating in an examination. find the percentage decrease in the mark​

Answer 1

% age decrease = 17%

Explanation:

total marks = 65

student got marks after decrement = 54

marks decreased = 65 - 54 = 11

% age decrease = marks decreased / total marks * 100

= 11 / 65 * 100

= 17%

Answer 2

decrease of ≈ 16.9%

Explanation:

percentage decrease is calculated as

`(decrease)/(original)` × 100%

decrease = 65 - 54 = 11 , then

percentage decrease =
`(11)/(65)` × 100% ≈ 0.1692.. × 100% ≈ 16.9% ( nearest tenth)