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There are 230 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 890 cents. How many 3-cent stamps are there?
There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1280 cents. How many 5-cent stamps are there?
There are 210 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1410 cents. How many 5-cent stamps are there?
There are 210 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1580 cents. How many 8-cent stamps are there?
There are 180 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 660 cents. How many 3-cent stamps are there?
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There are 190 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?
There are 200 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1390 cents. How many 5-cent stamps are there?
There are 240 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1440 cents. How many 5-cent stamps are there?
There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1100 cents. How many 6-cent stamps are there?
There are 230 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1540 cents. How many 6-cent stamps are there?
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