355  Stamp
How many stamps? 2

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



There are 250 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 990 cents. How many 3-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1280 cents. How many 4-cent stamps are there?



There are 150 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 760 cents. How many 4-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 7-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1220 cents. How many 7-cent stamps are there?



오늘 7원짜리 8원짜리 우표 총 230 장을 사고, 1710 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 180 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1220 cents. How many 6-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1580 cents. How many 7-cent stamps are there?



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355    80 130 140 70 90 ( 510 )   100 110 130 110 100 ( 550 )   [[ 1060 ]]