She answer 42 of the 60 questions correctly on a test. what methods should she use to find the percent of questions she answered correctly.

Divide the number of questions she got correct by the total number of questions on the test them multiply the decimal answer by 100 to get the percent.

42/60 = 0.7

0.7 x 100 = 70%

think about it deeply and passionately about this property

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percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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