754  Stamp
How many stamps? 2

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There are 200 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 6-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1860 cents. How many 8-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 790 cents. How many 4-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 890 cents. How many 5-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 960 cents. How many 8-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 900 cents. How many 5-cent stamps are there?



오늘 6원짜리 5원짜리 우표 총 210 장을 사고, 1170 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 170 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 6-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1500 cents. How many 6-cent stamps are there?



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754    70 120 110 70 90 ( 460 )   100 110 120 120 100 ( 550 )   [[ 1010 ]]