623  Stamp
How many stamps? 1

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There are 270 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 2030 cents. How many 8-cent stamps are there?



There are 280 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1510 cents. How many 4-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1110 cents. How many 6-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1330 cents. How many 4-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1700 cents. How many 8-cent stamps are there?

There are 120 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 730 cents. How many 4-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 800 cents. How many 4-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1430 cents. How many 8-cent stamps are there?



There are 130 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 490 cents. How many 3-cent stamps are there?

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