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509 Stamp |
Name : _________________ |
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There are 190 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1130 cents. How many 5-cent stamps are there? |
There are 220 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1640 cents. How many 8-cent stamps are there? |
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| 509 100 100 110 130 130 ( 570 ) 100 100 100 150 130 ( 580 ) [[ 1150 ]] | ||
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