365  Stamp
How many stamps? 2

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There are 180 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 930 cents. How many 5-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 650 cents. How many 5-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1520 cents. How many 5-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1420 cents. How many 6-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1160 cents. How many 6-cent stamps are there?



There are 280 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 970 cents. How many 3-cent stamps are there?



오늘 3원짜리 5원짜리 우표 총 160 장을 사고, 660 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 250 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1650 cents. How many 4-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



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365    80 150 70 70 90 ( 460 )   100 150 70 120 90 ( 530 )   [[ 990 ]]