299  Stamp
How many stamps? 2

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There are 180 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 880 cents. How many 6-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 550 cents. How many 4-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1080 cents. How many 5-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1070 cents. How many 7-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 3-cent stamps. Altogether they cost 990 cents. How many 6-cent stamps are there?



오늘 4원짜리 7원짜리 우표 총 240 장을 사고, 1350 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 150 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1210 cents. How many 7-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 670 cents. How many 4-cent stamps are there?



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299    80 150 70 90 110 ( 500 )   80 120 110 70 70 ( 450 )   [[ 950 ]]