Question


4.In Amy’s English class, 30% of the students play an instrument. She does not know how many in the whole school play an instrument, but there are 500 students in the school.
A.Solve the proportion 30/100=n/500 to estimate the total number of students in the school who play an instrument.

Ms. Sue
30/100=n/500

Cross multiply.

100n = 15,000

Solve for n

n = 150

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