526  Stamp
How many stamps? 2

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There are 210 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1350 cents. How many 8-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1070 cents. How many 5-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1410 cents. How many 5-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1560 cents. How many 6-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1170 cents. How many 6-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1870 cents. How many 7-cent stamps are there?



오늘 4원짜리 6원짜리 우표 총 240 장을 사고, 1180 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 240 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1350 cents. How many 4-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1280 cents. How many 4-cent stamps are there?



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526    100 70 90 120 80 ( 460 )   90 100 130 110 80 ( 510 )   [[ 970 ]]