550  Stamp
How many stamps? 2

Name : _________________

 

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There are 200 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1300 cents. How many 5-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1580 cents. How many 8-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1300 cents. How many 7-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1050 cents. How many 3-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1390 cents. How many 8-cent stamps are there?



There are 270 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1170 cents. How many 3-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1180 cents. How many 5-cent stamps are there?



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There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1280 cents. How many 8-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1560 cents. How many 8-cent stamps are there?



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550    100 130 70 110 130 ( 540 )   150 110 140 120 120 ( 640 )   [[ 1180 ]]