375  Stamp
How many stamps? 2

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There are 180 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1220 cents. How many 4-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1200 cents. How many 5-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1100 cents. How many 7-cent stamps are there?



There are 120 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 510 cents. How many 3-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1130 cents. How many 7-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1530 cents. How many 6-cent stamps are there?



오늘 6원짜리 7원짜리 우표 총 170 장을 사고, 1110 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 200 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 760 cents. How many 3-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 1010 cents. How many 3-cent stamps are there?



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375    80 150 80 70 70 ( 450 )   120 90 80 120 120 ( 530 )   [[ 980 ]]