419  Stamp
How many stamps? 2

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There are 160 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1000 cents. How many 5-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 720 cents. How many 3-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1520 cents. How many 8-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1010 cents. How many 3-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1700 cents. How many 6-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 950 cents. How many 3-cent stamps are there?



There are 120 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 820 cents. How many 6-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 210 장을 사고, 1080 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 250 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1890 cents. How many 8-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



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