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There are 200 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1250 cents. How many 8-cent stamps are there?
There are 230 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1170 cents. How many 3-cent stamps are there?
There are 230 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1510 cents. How many 8-cent stamps are there?
There are 130 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 490 cents. How many 3-cent stamps are there?
There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?
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There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 6-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?
오늘 8원짜리 9원짜리 우표 총 220 장을 사고, 1860 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?
There are 180 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 850 cents. How many 5-cent stamps are there?
There are 180 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 3-cent stamps are there?
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