451  Stamp
How many stamps? 2

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There are 160 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1210 cents. How many 8-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1240 cents. How many 4-cent stamps are there?



There are 150 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 760 cents. How many 6-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 890 cents. How many 4-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1560 cents. How many 6-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 670 cents. How many 3-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 990 cents. How many 4-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 180 장을 사고, 890 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 150 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 720 cents. How many 4-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1160 cents. How many 3-cent stamps are there?



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451    90 70 80 110 140 ( 490 )   140 90 70 90 130 ( 520 )   [[ 1010 ]]