478  Stamp
How many stamps? 2

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There are 160 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1060 cents. How many 7-cent stamps are there?



There are 120 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 730 cents. How many 4-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1480 cents. How many 8-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 180 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1740 cents. How many 5-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1220 cents. How many 4-cent stamps are there?



오늘 5원짜리 4원짜리 우표 총 190 장을 사고, 850 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1130 cents. How many 5-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 2010 cents. How many 7-cent stamps are there?



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478    100 70 80 140 120 ( 510 )   140 140 90 130 120 ( 620 )   [[ 1130 ]]