488  Stamp
How many stamps? 1

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There are 170 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1340 cents. How many 5-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1170 cents. How many 5-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1100 cents. How many 4-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 830 cents. How many 8-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 700 cents. How many 3-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1440 cents. How many 4-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 5-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 730 cents. How many 5-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1060 cents. How many 6-cent stamps are there?



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488    80 70 90 150 70 ( 460 )   100 100 120 80 110 ( 510 )   [[ 970 ]]