Problema Solution
Jeff is working on his free throw average. Right now he makes 15 out of 28 free throws. How many free throws would he have to make to raise his average to 75%?
Answer provided by our tutors
let x = the free throws he has to make to raise his average, x>0
at the moment his average is
(15/28)100 = 53.57%
the average is 75% with additional x throws made
(15 + x)/(28 + x) = 0.75
by solving we find
x = 24 free throws
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