SOLUTION: Sam took 5 mathematics test during the first marking period, and his average was 85. If his average after the first 3 tests was 83, what was the average of his 4th and 5th test?
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Question 749572: Sam took 5 mathematics test during the first marking period, and his average was 85. If his average after the first 3 tests was 83, what was the average of his 4th and 5th test?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
3*83=243
5*85=425
(243+2*x)/5=85
x=91
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