609  Stamp
How many stamps? 1

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There are 160 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1020 cents. How many 7-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 990 cents. How many 3-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1040 cents. How many 6-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1100 cents. How many 6-cent stamps are there?

There are 160 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 680 cents. How many 3-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 870 cents. How many 7-cent stamps are there?



There are 270 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1860 cents. How many 6-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 740 cents. How many 3-cent stamps are there?



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?

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