750  Stamp
How many stamps? 2

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There are 180 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1140 cents. How many 8-cent stamps are there?



There are 240 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 810 cents. How many 3-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 910 cents. How many 6-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 920 cents. How many 6-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1060 cents. How many 7-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?



오늘 4원짜리 6원짜리 우표 총 170 장을 사고, 820 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 180 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 790 cents. How many 5-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 920 cents. How many 8-cent stamps are there?



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750    120 150 110 70 90 ( 540 )   100 130 100 70 70 ( 470 )   [[ 1010 ]]