436  Stamp
How many stamps? 1

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There are 250 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1250 cents. How many 3-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1680 cents. How many 7-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1040 cents. How many 7-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1300 cents. How many 5-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1410 cents. How many 6-cent stamps are there?



There are 270 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1640 cents. How many 8-cent stamps are there?



There are 120 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 910 cents. How many 8-cent stamps are there?



There are 130 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 920 cents. How many 8-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1300 cents. How many 6-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 700 cents. How many 3-cent stamps are there?



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436    150 150 80 80 130 ( 590 )   140 70 70 150 150 ( 580 )   [[ 1170 ]]