903  Stamp
How many stamps? 2

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There are 260 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1380 cents. How many 3-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 560 cents. How many 3-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1220 cents. How many 5-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 960 cents. How many 5-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1210 cents. How many 7-cent stamps are there?



There are 280 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1510 cents. How many 4-cent stamps are there?



There are 270 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1500 cents. How many 7-cent stamps are there?



오늘 4원짜리 8원짜리 우표 총 170 장을 사고, 880 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 180 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1400 cents. How many 7-cent stamps are there?



There are 140 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 7-cent stamps are there?



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903    140 70 90 80 130 ( 510 )   150 140 120 110 80 ( 600 )   [[ 1110 ]]