240  Stamp
How many stamps? 2

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There are 220 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1460 cents. How many 5-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1620 cents. How many 6-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 930 cents. How many 3-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1020 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1470 cents. How many 8-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 120 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 800 cents. How many 5-cent stamps are there?



오늘 6원짜리 3원짜리 우표 총 200 장을 사고, 1020 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 180 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1050 cents. How many 4-cent stamps are there?



There are 140 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 960 cents. How many 6-cent stamps are there?



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240    130 90 100 120 70 ( 510 )   130 70 140 70 80 ( 490 )   [[ 1000 ]]