You plan on taking a 1170 mile long trip in your car, which average 19.5 miles per gallon. about how many gallons of gas will you use? if gas costs 2.85 dollars per gallon, how much do you expect to spend on gas?

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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