787  Stamp
How many stamps? 2

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There are 220 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1330 cents. How many 4-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1060 cents. How many 6-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1770 cents. How many 8-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1190 cents. How many 7-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1140 cents. How many 7-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 850 cents. How many 5-cent stamps are there?



오늘 8원짜리 4원짜리 우표 총 200 장을 사고, 1320 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 210 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 6-cent stamps are there?



There are 270 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1410 cents. How many 7-cent stamps are there?



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787    130 110 120 110 110 ( 580 )   120 90 130 120 150 ( 610 )   [[ 1190 ]]