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There are 240 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1050 cents. How many 4-cent stamps are there?
There are 170 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 630 cents. How many 4-cent stamps are there?
There are 230 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1250 cents. How many 7-cent stamps are there?
There are 140 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 850 cents. How many 5-cent stamps are there?
There are 200 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1190 cents. How many 7-cent stamps are there?
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There are 200 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 740 cents. How many 4-cent stamps are there?
There are 260 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1630 cents. How many 5-cent stamps are there?
There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 750 cents. How many 4-cent stamps are there?
There are 240 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?
There are 260 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1690 cents. How many 8-cent stamps are there?
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