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strojnjashka [21]
3 years ago
13

Last year at a certain high school, there were 96 boys on the honor roll and 85 girls on the honor roll. This year, the number o

f boys on the honor roll increased by 25% and the number of girls on the honor roll increased by 20%. By what percentage did the total number of students on the honor roll increase? Round your answer to the nearest tenth (if necessary).
Mathematics
1 answer:
Lorico [155]3 years ago
8 0

Step-by-step explanation:

Originally=96boys 85girls

increase 96 by25% that is 125/100×96=115.2boys

increase 85 by 20%. 120/100×85=102girls

total number before increase=96boys+85girls=181pupils

after increase=115boys+102girls=217pupils

Percentage increase=increase/original number×100%

increase=217-181=36

36/181×100%

=19.889(to the nearest tenth)

=19.9%

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