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There are 230 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1030 cents. How many 5-cent stamps are there?
There are 240 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1680 cents. How many 6-cent stamps are there?
There are 230 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1600 cents. How many 8-cent stamps are there?
There are 210 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1570 cents. How many 5-cent stamps are there?
There are 230 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1410 cents. How many 5-cent stamps are there?
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There are 230 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1560 cents. How many 6-cent stamps are there?
There are 140 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 650 cents. How many 5-cent stamps are there?
오늘 5원짜리 8원짜리 우표 총 180 장을 사고, 1230 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?
There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1360 cents. How many 8-cent stamps are there?
There are 220 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1540 cents. How many 6-cent stamps are there?
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