651  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 1450 cents. How many 5-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1710 cents. How many 6-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1380 cents. How many 6-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1200 cents. How many 8-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 990 cents. How many 3-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 610 cents. How many 3-cent stamps are there?



오늘 5원짜리 7원짜리 우표 총 230 장을 사고, 1330 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 230 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1010 cents. How many 3-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1320 cents. How many 8-cent stamps are there?



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651    110 140 150 140 100 ( 640 )   130 110 140 150 100 ( 630 )   [[ 1270 ]]