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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?
asked 78.3k views
4 votes
Andy scored 90 on the last history exam. He scored 81 this time. By what percent did his score decrease?

asked
User Camille
by
8.0k points

2 Answers

7 votes

Answer:

Explanation:

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

answered
User Tom Crockett
by
8.0k points
6 votes

Answer:

90%

Explanation:

90*0.90=81

answered
User Arshaw
by
8.8k points
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