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OpenStudy (anonymous):
Joe has 10 rolls of coins. Each roll holds 12 coins. If 5 of the rolls are full and 5 of the rolls are half full, how many coins does Joe have?
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OpenStudy (anonymous):
can you start this?
OpenStudy (anonymous):
how many in the five full rolls?
OpenStudy (anonymous):
60
OpenStudy (anonymous):
right!
OpenStudy (anonymous):
how many in one half full roll?
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OpenStudy (anonymous):
the answer is90
OpenStudy (anonymous):
yes, the answer is \[5\times 12+5\times 6=60+30=90\]
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