587  Stamp
How many stamps? 2

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There are 170 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 910 cents. How many 5-cent stamps are there?



There are 120 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 630 cents. How many 4-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 550 cents. How many 3-cent stamps are there?



There are 130 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 900 cents. How many 6-cent stamps are there?



There are 150 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1350 cents. How many 6-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1780 cents. How many 8-cent stamps are there?



오늘 8원짜리 6원짜리 우표 총 210 장을 사고, 1520 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 180 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 4-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1060 cents. How many 3-cent stamps are there?



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587    110 70 100 70 70 ( 420 )   120 140 130 90 140 ( 620 )   [[ 1040 ]]