215  Stamp
How many stamps? 2

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There are 180 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 960 cents. How many 3-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1350 cents. How many 5-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1250 cents. How many 6-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 4-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1680 cents. How many 8-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1730 cents. How many 8-cent stamps are there?



오늘 6원짜리 3원짜리 우표 총 150 장을 사고, 660 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 280 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1640 cents. How many 4-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1470 cents. How many 8-cent stamps are there?



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215    70 140 150 150 150 ( 660 )   150 120 70 150 150 ( 640 )   [[ 1300 ]]