806  Stamp
How many stamps? 2

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There are 240 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1460 cents. How many 7-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 960 cents. How many 5-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1040 cents. How many 8-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1390 cents. How many 7-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 720 cents. How many 6-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1480 cents. How many 4-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1130 cents. How many 5-cent stamps are there?



오늘 6원짜리 7원짜리 우표 총 190 장을 사고, 1250 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 210 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 810 cents. How many 3-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 700 cents. How many 5-cent stamps are there?



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806    130 120 70 70 80 ( 470 )   130 130 80 150 80 ( 570 )   [[ 1040 ]]