423  Stamp
How many stamps? 2

Name : _________________

 

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There are 220 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1540 cents. How many 6-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1000 cents. How many 5-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1230 cents. How many 7-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1030 cents. How many 7-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 900 cents. How many 7-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1440 cents. How many 7-cent stamps are there?



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There are 260 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 2200 cents. How many 8-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1350 cents. How many 6-cent stamps are there?



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423    110 140 140 90 100 ( 580 )   110 80 90 140 90 ( 510 )   [[ 1090 ]]