594  Stamp
How many stamps? 2

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There are 170 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 620 cents. How many 4-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 870 cents. How many 6-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 880 cents. How many 6-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1140 cents. How many 5-cent stamps are there?



There are 140 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 900 cents. How many 5-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1340 cents. How many 5-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1270 cents. How many 5-cent stamps are there?



오늘 4원짜리 3원짜리 우표 총 280 장을 사고, 990 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 170 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 820 cents. How many 4-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 810 cents. How many 4-cent stamps are there?



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594    110 90 100 140 90 ( 530 )   100 110 150 100 90 ( 550 )   [[ 1080 ]]