500  Stamp
How many stamps? 2

Name : _________________

 

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There are 230 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1350 cents. How many 7-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 760 cents. How many 7-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 750 cents. How many 4-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1670 cents. How many 8-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1020 cents. How many 8-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 700 cents. How many 3-cent stamps are there?



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There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1410 cents. How many 7-cent stamps are there?



There are 150 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 6-cent stamps are there?



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500    100 70 90 130 80 ( 470 )   90 100 140 90 80 ( 500 )   [[ 970 ]]