285  Stamp
How many stamps? 2

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There are 190 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 790 cents. How many 3-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 8-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1320 cents. How many 6-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1350 cents. How many 5-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1380 cents. How many 6-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1440 cents. How many 8-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 960 cents. How many 4-cent stamps are there?



오늘 5원짜리 7원짜리 우표 총 180 장을 사고, 1120 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 200 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 580 cents. How many 4-cent stamps are there?



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285    80 100 100 150 110 ( 540 )   120 120 70 150 70 ( 530 )   [[ 1070 ]]