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There are 200 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?
There are 220 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?
There are 190 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1090 cents. How many 7-cent stamps are there?
There are 240 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1350 cents. How many 7-cent stamps are there?
There are 250 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1480 cents. How many 8-cent stamps are there?
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There are 240 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1720 cents. How many 5-cent stamps are there?
There are 130 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 890 cents. How many 8-cent stamps are there?
오늘 5원짜리 9원짜리 우표 총 210 장을 사고, 1490 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?
There are 140 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 880 cents. How many 8-cent stamps are there?
There are 120 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 670 cents. How many 6-cent stamps are there?
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