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570 Stamp |
Name : _________________ |
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There are 260 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1340 cents. How many 6-cent stamps are there? |
There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1430 cents. How many 7-cent stamps are there? |
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| 570 150 100 100 70 150 ( 570 ) 110 130 120 100 100 ( 560 ) [[ 1130 ]] | ||
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