783  Stamp
How many stamps? 2

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There are 210 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1370 cents. How many 5-cent stamps are there?



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 7-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1520 cents. How many 8-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1010 cents. How many 3-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1370 cents. How many 7-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 820 cents. How many 3-cent stamps are there?



오늘 6원짜리 7원짜리 우표 총 230 장을 사고, 1480 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 210 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 870 cents. How many 5-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1550 cents. How many 7-cent stamps are there?



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783    130 70 80 120 80 ( 480 )   80 100 130 120 80 ( 510 )   [[ 990 ]]