485  Stamp
How many stamps? 2

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There are 130 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 980 cents. How many 8-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1290 cents. How many 7-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1040 cents. How many 4-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 590 cents. How many 3-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1250 cents. How many 6-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1560 cents. How many 6-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1400 cents. How many 6-cent stamps are there?



오늘 6원짜리 7원짜리 우표 총 200 장을 사고, 1300 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 200 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1040 cents. How many 7-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1520 cents. How many 8-cent stamps are there?



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485    70 110 120 90 100 ( 490 )   100 140 100 80 100 ( 520 )   [[ 1010 ]]