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29 January, 08:43

Susan's penny bank is 1/10 full. After she adds 240 pennies, it is 2/5 full. How many pennies can Susan's bank hold?

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  1. 29 January, 09:35
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    240 pennies occupy (2/5 minus 1/10) the penny bank volume.

    2/5 - 1/10 = 3/10 =.3

    240 pennies. 3 * the volume

    Volume = 240 /.3 = 800 pennies
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