535  Stamp
How many stamps? 2

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There are 200 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1000 cents. How many 3-cent stamps are there?



There are 130 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1010 cents. How many 7-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1060 cents. How many 5-cent stamps are there?



There are 150 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 900 cents. How many 4-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1260 cents. How many 5-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 780 cents. How many 6-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1100 cents. How many 7-cent stamps are there?



오늘 6원짜리 4원짜리 우표 총 220 장을 사고, 1180 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 190 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1060 cents. How many 7-cent stamps are there?



There are 260 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1560 cents. How many 8-cent stamps are there?



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535    100 80 140 90 140 ( 550 )   100 110 150 100 130 ( 590 )   [[ 1140 ]]