894  Stamp
How many stamps? 2

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There are 270 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1900 cents. How many 8-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1020 cents. How many 8-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 790 cents. How many 7-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 850 cents. How many 8-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 720 cents. How many 3-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1480 cents. How many 5-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1230 cents. How many 6-cent stamps are there?



오늘 5원짜리 3원짜리 우표 총 240 장을 사고, 1000 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 170 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1280 cents. How many 7-cent stamps are there?



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894    140 90 70 80 140 ( 520 )   80 130 140 70 140 ( 560 )   [[ 1080 ]]