455  Stamp
How many stamps? 2

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There are 190 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?



There are 130 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 460 cents. How many 4-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1100 cents. How many 5-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 660 cents. How many 3-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 770 cents. How many 4-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1000 cents. How many 4-cent stamps are there?



오늘 8원짜리 9원짜리 우표 총 220 장을 사고, 1840 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 190 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 3-cent stamps are there?



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?



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455    90 70 80 120 80 ( 440 )   90 100 140 90 70 ( 490 )   [[ 930 ]]