133  Stamp
How many stamps? 2

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There are 260 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1380 cents. How many 7-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1000 cents. How many 4-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1580 cents. How many 5-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1440 cents. How many 7-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 790 cents. How many 5-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1070 cents. How many 4-cent stamps are there?



오늘 4원짜리 9원짜리 우표 총 250 장을 사고, 1500 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 140 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 600 cents. How many 5-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



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