After 5 tests, her average was 88. To have a seven-test average of 90, the total must be:
Her average after 5 tests was 88. Her total score on the 5 tests is:
Subtract:
Find the average by dividing by 2:
Her average must be 95
Gerard has 365 baseball cards. He puts as many of them as he can into piles of 100. How many piles of 100 does he make?
2 answers:
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