482  Stamp
How many stamps? 1

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There are 230 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 950 cents. How many 3-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 750 cents. How many 6-cent stamps are there?



There are 130 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 590 cents. How many 3-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1660 cents. How many 8-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1530 cents. How many 7-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1710 cents. How many 6-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1430 cents. How many 5-cent stamps are there?



There are 140 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 820 cents. How many 5-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 980 cents. How many 4-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1140 cents. How many 3-cent stamps are there?



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482    100 70 80 120 70 ( 440 )   120 130 80 140 110 ( 580 )   [[ 1020 ]]