547  Stamp
How many stamps? 2

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There are 210 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1390 cents. How many 4-cent stamps are there?



There are 260 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1860 cents. How many 8-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 1030 cents. How many 5-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1720 cents. How many 8-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 900 cents. How many 5-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1050 cents. How many 7-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 990 cents. How many 4-cent stamps are there?



오늘 7원짜리 6원짜리 우표 총 230 장을 사고, 1530 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 180 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1140 cents. How many 5-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 590 cents. How many 3-cent stamps are there?



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547    100 150 140 110 110 ( 610 )   100 90 150 120 130 ( 590 )   [[ 1200 ]]