102  Stamp
How many stamps? 1

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There are 270 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1110 cents. How many 4-cent stamps are there?



There are 270 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1230 cents. How many 6-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 4-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1220 cents. How many 6-cent stamps are there?

There are 230 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1240 cents. How many 5-cent stamps are there?



There are 200 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 6-cent stamps and 4-cent stamps. Altogether they cost 800 cents. How many 6-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1130 cents. How many 5-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1690 cents. How many 5-cent stamps are there?

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