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666 Stamp |
Name : _________________ |
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There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1360 cents. How many 5-cent stamps are there? |
There are 210 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1580 cents. How many 7-cent stamps are there? |
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| 666 110 100 130 100 130 ( 570 ) 100 140 120 100 70 ( 530 ) [[ 1100 ]] | ||
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