395  Stamp
How many stamps? 2

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There are 150 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 900 cents. How many 4-cent stamps are there?



There are 140 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 690 cents. How many 6-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1180 cents. How many 6-cent stamps are there?



There are 270 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1200 cents. How many 4-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1060 cents. How many 5-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 610 cents. How many 4-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1080 cents. How many 4-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 250 장을 사고, 1500 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 270 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1880 cents. How many 6-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?



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395    90 90 130 150 100 ( 560 )   70 90 150 140 70 ( 520 )   [[ 1080 ]]