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511 Stamp |
Name : _________________ |
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There are 230 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there? |
There are 240 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there? |
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| 511 100 120 90 130 80 ( 520 ) 140 100 100 100 130 ( 570 ) [[ 1090 ]] | ||
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