879  Stamp
How many stamps? 2

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There are 200 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 880 cents. How many 5-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1020 cents. How many 4-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 830 cents. How many 4-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1200 cents. How many 6-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 610 cents. How many 5-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1480 cents. How many 6-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 910 cents. How many 5-cent stamps are there?



오늘 6원짜리 3원짜리 우표 총 190 장을 사고, 840 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 200 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1380 cents. How many 3-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1520 cents. How many 8-cent stamps are there?



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879    140 130 120 80 80 ( 550 )   100 140 90 70 130 ( 530 )   [[ 1080 ]]