Question 1009392
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x=number he must make in a row
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58+x=0.90(82+x)
58+x=73.8+0.90x
0.10x=15.8
x=158
ANSWER: He must make 158 in a row to average 90 percent.
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CHECK:
58+x=0.90(82+x)
58+158=0.90(82+158)
216=0.90(240)
216=216