544  Stamp
How many stamps? 2

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There are 180 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 810 cents. How many 3-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 790 cents. How many 3-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1110 cents. How many 3-cent stamps are there?



There are 250 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1140 cents. How many 6-cent stamps are there?



There are 280 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1530 cents. How many 5-cent stamps are there?



오늘 6원짜리 5원짜리 우표 총 190 장을 사고, 1080 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 200 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 960 cents. How many 6-cent stamps are there?



There are 260 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1950 cents. How many 8-cent stamps are there?



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544    100 120 130 80 130 ( 560 )   130 150 130 120 130 ( 660 )   [[ 1220 ]]