powellc760 powellc760

02-03-2015
Mathematics

Answered

Janice correctly answered 21 of the 24 questions. what percent of the questions did she answer correctly?

Answer :

02-03-2015

24 = 100%
21 = x%

Cross Multiply

24 * x = 100 * 21
24x = 2100
x = 2100
24
x = 87.5

Solution: 87.5%

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apologiabiology apologiabiology

02-03-2015

so 21/24=x%
percent means parts out of 100 so
21/24
divide the fraction out
0.875
this is out of 1 so
0.875/1 times 10/10=8.75/10 timmes 10/10=87.5/100
the answer is 87.5%

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