602  Stamp
How many stamps? 2

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There are 220 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 4-cent stamps are there?



There are 150 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 960 cents. How many 6-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1650 cents. How many 5-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 690 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?



There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 940 cents. How many 3-cent stamps are there?



오늘 7원짜리 5원짜리 우표 총 180 장을 사고, 1160 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 200 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1360 cents. How many 6-cent stamps are there?



There are 250 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1890 cents. How many 6-cent stamps are there?



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602    110 90 150 90 140 ( 580 )   140 130 130 120 120 ( 640 )   [[ 1220 ]]