555  Stamp
How many stamps? 2

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There are 180 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1220 cents. How many 5-cent stamps are there?



There are 140 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 810 cents. How many 4-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1280 cents. How many 4-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1300 cents. How many 8-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1620 cents. How many 8-cent stamps are there?



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



There are 190 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1020 cents. How many 5-cent stamps are there?



오늘 4원짜리 7원짜리 우표 총 190 장을 사고, 1120 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 230 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1650 cents. How many 6-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1110 cents. How many 8-cent stamps are there?



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555    100 90 120 100 150 ( 560 )   70 120 70 140 120 ( 520 )   [[ 1080 ]]