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601 Stamp |
Name : _________________ |
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There are 180 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 940 cents. How many 6-cent stamps are there? |
There are 250 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1990 cents. How many 7-cent stamps are there? |
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| 601 110 130 100 120 90 ( 550 ) 130 130 140 120 100 ( 620 ) [[ 1170 ]] | ||
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