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719 Stamp |
Name : _________________ |
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There are 210 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 720 cents. How many 3-cent stamps are there? |
There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1270 cents. How many 7-cent stamps are there? |
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| 719 120 80 110 70 110 ( 490 ) 130 120 110 140 130 ( 630 ) [[ 1120 ]] | ||
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