917  Stamp
How many stamps? 2

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There are 200 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1660 cents. How many 8-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 710 cents. How many 5-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1150 cents. How many 5-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1070 cents. How many 4-cent stamps are there?



There are 260 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1170 cents. How many 6-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1040 cents. How many 7-cent stamps are there?



오늘 7원짜리 9원짜리 우표 총 230 장을 사고, 1830 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 170 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1150 cents. How many 8-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1110 cents. How many 7-cent stamps are there?



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917    140 100 150 110 110 ( 610 )   130 70 120 100 120 ( 540 )   [[ 1150 ]]