340  Stamp
How many stamps? 2

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There are 140 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 820 cents. How many 8-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1710 cents. How many 6-cent stamps are there?



There are 260 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 2040 cents. How many 7-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1520 cents. How many 5-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1170 cents. How many 5-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 140 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 820 cents. How many 5-cent stamps are there?



오늘 6원짜리 8원짜리 우표 총 230 장을 사고, 1640 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 180 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1160 cents. How many 7-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 900 cents. How many 4-cent stamps are there?



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340    80 150 150 70 80 ( 530 )   130 80 100 80 150 ( 540 )   [[ 1070 ]]