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There are 230 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 910 cents. How many 5-cent stamps are there?
There are 160 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 980 cents. How many 7-cent stamps are there?
There are 220 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1880 cents. How many 8-cent stamps are there?
There are 250 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1150 cents. How many 5-cent stamps are there?
There are 190 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 770 cents. How many 5-cent stamps are there?
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There are 240 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 2050 cents. How many 8-cent stamps are there?
There are 220 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1320 cents. How many 3-cent stamps are there?
오늘 5원짜리 7원짜리 우표 총 150 장을 사고, 870 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?
There are 240 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1260 cents. How many 4-cent stamps are there?
There are 250 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1510 cents. How many 5-cent stamps are there?
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