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There are 230 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1290 cents. How many 6-cent stamps are there?
There are 210 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?
There are 200 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 920 cents. How many 7-cent stamps are there?
There are 180 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1020 cents. How many 7-cent stamps are there?
There are 260 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1950 cents. How many 7-cent stamps are there?
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There are 220 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1220 cents. How many 7-cent stamps are there?
There are 220 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1060 cents. How many 6-cent stamps are there?
오늘 7원짜리 4원짜리 우표 총 210 장을 사고, 1260 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?
There are 220 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1000 cents. How many 5-cent stamps are there?
There are 190 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1260 cents. How many 6-cent stamps are there?
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