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After his first six biology tests, Ruben has a mean score of 78.What score does Ruben need on the next test to raise his averag...Question
After his six biology tests, Ruben has a mean score of 78. What Score does Ruben need on the next test to raise his average (mean) to 80?
Answers
Sue S.
He has a total score so far of 468.
After the seventh test he wants a total of 560.
560 - 468 = 92
After the seventh test he wants a total of 560.
560 - 468 = 92
R_scott
he needs to add 2 points to each of the 6 tests already taken
plus, he needs to score the 80 average
(2 * 6) + 80 = ?
plus, he needs to score the 80 average
(2 * 6) + 80 = ?