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There are 190 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1050 cents. How many 5-cent stamps are there?
There are 120 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 740 cents. How many 7-cent stamps are there?
There are 170 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1450 cents. How many 8-cent stamps are there?
There are 230 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1180 cents. How many 6-cent stamps are there?
There are 150 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 690 cents. How many 6-cent stamps are there?
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There are 200 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1100 cents. How many 8-cent stamps are there?
There are 150 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 800 cents. How many 5-cent stamps are there?
오늘 6원짜리 5원짜리 우표 총 200 장을 사고, 1080 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?
There are 170 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1210 cents. How many 5-cent stamps are there?
There are 260 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1820 cents. How many 5-cent stamps are there?
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