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558 Stamp |
Name : _________________ |
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There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1140 cents. How many 5-cent stamps are there? |
There are 200 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1260 cents. How many 7-cent stamps are there? |
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| 558 120 110 70 120 150 ( 570 ) 130 100 110 120 140 ( 600 ) [[ 1170 ]] | ||
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