257  Stamp
How many stamps? 2

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There are 200 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1210 cents. How many 8-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1260 cents. How many 5-cent stamps are there?



There are 280 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1920 cents. How many 5-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 710 cents. How many 4-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1630 cents. How many 5-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 710 cents. How many 3-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1010 cents. How many 4-cent stamps are there?



오늘 6원짜리 4원짜리 우표 총 140 장을 사고, 740 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 180 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1090 cents. How many 3-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?



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257    70 140 150 110 150 ( 620 )   70 140 90 70 110 ( 480 )   [[ 1100 ]]