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Charmaine's penny bank is 2/3 full. After she removes 160 pennies, it is 4/9 full. How many pennies can Charmaine's bank hold?
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Mar 11, 2018
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Charmaine's penny bank is 2/3 full. After she removes 160 pennies, it is 4/9 full. How many pennies can Charmaine's bank hold?
Mathematics
high-school
Andrew Marin
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2/3 = 6/9
6/9 - 4/9 = 2/9
160÷2 = 80
80 = 1/9
80*9= 720 pennies
Duoc Tran
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Mar 11, 2018
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2/3X - 160 = 4/9X
2/3X - 4/9X = 160
6/9X -4/9X = 160
2/9X = 160
X =80x9
X = 720
Mcornell
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Mar 15, 2018
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Mcornell
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