603  Stamp
How many stamps? 2

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There are 160 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1170 cents. How many 7-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 6-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1260 cents. How many 7-cent stamps are there?



There are 250 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1260 cents. How many 6-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 870 cents. How many 4-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1090 cents. How many 7-cent stamps are there?



There are 280 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1660 cents. How many 5-cent stamps are there?



오늘 3원짜리 5원짜리 우표 총 180 장을 사고, 700 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 180 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1020 cents. How many 4-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 570 cents. How many 3-cent stamps are there?



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603    110 80 90 130 80 ( 490 )   110 150 100 80 70 ( 510 )   [[ 1000 ]]