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There are 250 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1610 cents. How many 5-cent stamps are there?
There are 150 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 760 cents. How many 4-cent stamps are there?
There are 200 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1560 cents. How many 6-cent stamps are there?
There are 160 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 960 cents. How many 8-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?
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There are 170 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1130 cents. How many 4-cent stamps are there?
There are 220 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 930 cents. How many 6-cent stamps are there?
오늘 6원짜리 3원짜리 우표 총 190 장을 사고, 840 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?
There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1170 cents. How many 5-cent stamps are there?
There are 140 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1190 cents. How many 8-cent stamps are there?
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