205  Stamp
How many stamps? 2

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There are 170 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



There are 280 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1790 cents. How many 5-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1060 cents. How many 5-cent stamps are there?



There are 270 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1410 cents. How many 7-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1260 cents. How many 6-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1130 cents. How many 5-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 810 cents. How many 4-cent stamps are there?



오늘 6원짜리 9원짜리 우표 총 240 장을 사고, 1710 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 160 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 820 cents. How many 4-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1110 cents. How many 7-cent stamps are there?



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205    70 150 100 150 70 ( 540 )   100 140 150 100 80 ( 570 )   [[ 1110 ]]