673  Stamp
How many stamps? 2

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There are 210 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 740 cents. How many 4-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1330 cents. How many 6-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1640 cents. How many 7-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1240 cents. How many 4-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1420 cents. How many 4-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1120 cents. How many 5-cent stamps are there?



There are 140 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 560 cents. How many 5-cent stamps are there?



오늘 4원짜리 7원짜리 우표 총 160 장을 사고, 910 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 180 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1230 cents. How many 6-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 4-cent stamps are there?



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673    110 140 120 150 130 ( 650 )   140 70 70 130 80 ( 490 )   [[ 1140 ]]