228  Stamp
How many stamps? 2

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There are 120 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 700 cents. How many 5-cent stamps are there?



There are 260 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1560 cents. How many 8-cent stamps are there?



There are 250 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1380 cents. How many 6-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 880 cents. How many 5-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1340 cents. How many 6-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1440 cents. How many 8-cent stamps are there?



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?



오늘 3원짜리 4원짜리 우표 총 240 장을 사고, 820 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 180 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 780 cents. How many 4-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1410 cents. How many 6-cent stamps are there?



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