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Andy scored 90 on the last history exam. He scored 81 this time. By what percent did his score decrease?

Andy scored 90 on the last history exam. He scored 81 this time. By what percent did his score decrease?
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4 votes
Andy scored 90 on the last history exam. He scored 81 this time. By what percent did his score decrease?

User Camille
by
8.0k points

2 Answers

7 votes

Answer:

Explanation:

If out of 100, 90-81=9 so it decreased by 9%

User Tom Crockett
by
8.0k points
6 votes

Answer:

90%

Explanation:

90*0.90=81

User Arshaw
by
8.8k points
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