769  Stamp
How many stamps? 2

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There are 210 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1540 cents. How many 7-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 960 cents. How many 8-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1010 cents. How many 7-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 880 cents. How many 8-cent stamps are there?



There are 130 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 850 cents. How many 7-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 8-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



오늘 5원짜리 4원짜리 우표 총 200 장을 사고, 940 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 210 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 900 cents. How many 3-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 890 cents. How many 4-cent stamps are there?



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769    140 70 110 70 70 ( 460 )   80 130 140 120 110 ( 580 )   [[ 1040 ]]