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719 Stamp |
Name : _________________ |
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There are 180 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 780 cents. How many 5-cent stamps are there? |
There are 220 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1760 cents. How many 7-cent stamps are there? |
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| 719 120 100 110 150 100 ( 580 ) 110 120 70 120 100 ( 520 ) [[ 1100 ]] | ||
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