326  Stamp
How many stamps? 2

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There are 150 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1190 cents. How many 7-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1340 cents. How many 7-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1660 cents. How many 5-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1090 cents. How many 4-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1790 cents. How many 7-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1570 cents. How many 8-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 900 cents. How many 3-cent stamps are there?



오늘 4원짜리 6원짜리 우표 총 200 장을 사고, 980 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 260 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1260 cents. How many 4-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 760 cents. How many 3-cent stamps are there?



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326    80 140 140 70 140 ( 570 )   140 150 110 150 70 ( 620 )   [[ 1190 ]]