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557 Stamp |
Name : _________________ |
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There are 180 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 860 cents. How many 3-cent stamps are there? |
There are 230 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there? |
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| 557 100 80 100 140 130 ( 550 ) 100 150 150 150 130 ( 680 ) [[ 1230 ]] | ||
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