574  Stamp
How many stamps? 2

Name : _________________

 

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There are 220 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1420 cents. How many 7-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 960 cents. How many 7-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 640 cents. How many 4-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1060 cents. How many 7-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1500 cents. How many 3-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 690 cents. How many 6-cent stamps are there?



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There are 200 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1400 cents. How many 8-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



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574    100 80 100 90 100 ( 470 )   110 70 90 100 140 ( 510 )   [[ 980 ]]