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672 Stamp |
Name : _________________ |
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There are 180 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1400 cents. How many 7-cent stamps are there? |
There are 200 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1190 cents. How many 4-cent stamps are there? |
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| 672 110 120 150 100 120 ( 600 ) 70 120 100 110 120 ( 520 ) [[ 1120 ]] | ||
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