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813 Stamp |
Name : _________________ |
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There are 220 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1190 cents. How many 5-cent stamps are there? |
There are 170 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1240 cents. How many 7-cent stamps are there? |
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| 813 130 110 120 70 110 ( 540 ) 120 130 80 130 110 ( 570 ) [[ 1110 ]] | ||
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