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668 Stamp |
Name : _________________ |
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There are 210 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1780 cents. How many 8-cent stamps are there? |
There are 240 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1660 cents. How many 8-cent stamps are there? |
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| 668 110 90 100 140 110 ( 550 ) 110 150 100 90 100 ( 550 ) [[ 1100 ]] | ||
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