09-11-2016
Mathematics

contestada

Kate has scored 10 free throws out of 18 tries. She would really like to bring her free throw average up to at least 80%. How many consecutive free throws should she score in order to bring up her average to 80%?

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FractalX FractalX

09-11-2016

(10+t)/(18+t)=8/10
8(18+t)=10(10+t)
144+8t=100+10t
44=2t
t = 22 throws

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