487  Stamp
How many stamps? 2

Name : _________________

 

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There are 190 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1420 cents. How many 7-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1200 cents. How many 7-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1310 cents. How many 7-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1340 cents. How many 6-cent stamps are there?



There are 140 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 610 cents. How many 4-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1000 cents. How many 7-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 960 cents. How many 4-cent stamps are there?



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There are 200 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1760 cents. How many 8-cent stamps are there?



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487    100 120 130 130 90 ( 570 )   100 100 80 140 130 ( 550 )   [[ 1120 ]]