693  Stamp
How many stamps? 2

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There are 180 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 990 cents. How many 8-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 800 cents. How many 5-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1110 cents. How many 3-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1520 cents. How many 8-cent stamps are there?



오늘 6원짜리 3원짜리 우표 총 220 장을 사고, 1110 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 200 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1020 cents. How many 4-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1050 cents. How many 5-cent stamps are there?



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693    120 80 100 130 150 ( 580 )   100 150 150 90 70 ( 560 )   [[ 1140 ]]