440  Stamp
How many stamps? 1

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There are 150 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 870 cents. How many 7-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1310 cents. How many 5-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 640 cents. How many 5-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1640 cents. How many 5-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?

There are 130 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 550 cents. How many 5-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1080 cents. How many 7-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 770 cents. How many 4-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 710 cents. How many 3-cent stamps are there?



There are 150 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 530 cents. How many 4-cent stamps are there?

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