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Eight scores have an average of six. Scores of 15 and x increase the average to 7. Find x

Eight scores have an average of six. Scores of 15 and x increase the average to 7. Find x
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Eight scores have an average of six. Scores of 15 and x increase the average to 7. Find x

User Elkin
by
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1 Answer

4 votes
a/8 = 6....a = 6 * 8.....a = 48

(48 + 15 + x) / 10 = 7
(63 + x) / 10 = 7
63 + x = 70
x = 70 - 63
x = 7 <====

User Gbps
by
8.6k points
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