622  Stamp
How many stamps? 2

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There are 200 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1510 cents. How many 8-cent stamps are there?



There are 140 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 710 cents. How many 4-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1320 cents. How many 6-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 950 cents. How many 8-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 770 cents. How many 3-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1530 cents. How many 7-cent stamps are there?



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?



오늘 8원짜리 6원짜리 우표 총 170 장을 사고, 1240 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 150 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1040 cents. How many 8-cent stamps are there?



There are 260 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1440 cents. How many 6-cent stamps are there?



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622    110 90 100 100 140 ( 540 )   150 70 110 70 140 ( 540 )   [[ 1080 ]]