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There are 190 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1190 cents. How many 5-cent stamps are there?
There are 250 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1150 cents. How many 5-cent stamps are there?
There are 130 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 720 cents. How many 6-cent stamps are there?
There are 210 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1560 cents. How many 6-cent stamps are there?
There are 200 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1070 cents. How many 6-cent stamps are there?
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There are 230 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1620 cents. How many 8-cent stamps are there?
There are 150 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 720 cents. How many 6-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 180 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1140 cents. How many 8-cent stamps are there?
There are 160 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 740 cents. How many 5-cent stamps are there?
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