453  Stamp
How many stamps? 1

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There are 140 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 780 cents. How many 7-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 970 cents. How many 5-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1260 cents. How many 8-cent stamps are there?



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



There are 200 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1380 cents. How many 6-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1670 cents. How many 8-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1050 cents. How many 5-cent stamps are there?



There are 150 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 820 cents. How many 6-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1200 cents. How many 3-cent stamps are there?



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453    90 70 90 120 80 ( 450 )   140 140 130 70 100 ( 580 )   [[ 1030 ]]