648 Stamp |
Name : _________________ |
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There are 180 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there? |
There are 200 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 4-cent stamps are there? |
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648 110 90 80 70 120 ( 470 ) 70 110 90 100 120 ( 490 ) [[ 960 ]] | ||
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