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Charmaine's penny bank is
1/3 full. After she adds 80 pennies, it is
1/2 full. How many pennies can Charmaine's bank hold?
The first step would be to notice that 80 pennies= 1/6 of the penny bank, since 1/3=2/6 and 2/6+1/6=3/6 or 1/2. Since 80 pennies make up 1/6 of the bank then 80 times 6 would make up the whole bank. Final answer - 480 pennies
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