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There are 190 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1460 cents. How many 8-cent stamps are there?
There are 220 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1320 cents. How many 8-cent stamps are there?
There are 190 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 640 cents. How many 3-cent stamps are there?
There are 190 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?
There are 170 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 610 cents. How many 3-cent stamps are there?
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There are 240 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1800 cents. How many 8-cent stamps are there?
There are 210 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 790 cents. How many 3-cent stamps are there?
There are 210 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 950 cents. How many 7-cent stamps are there?
There are 200 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1250 cents. How many 8-cent stamps are there?
There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1270 cents. How many 7-cent stamps are there?
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