724  Stamp
How many stamps? 2

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There are 250 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 1010 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 8-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1620 cents. How many 6-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1230 cents. How many 3-cent stamps are there?



There are 130 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1360 cents. How many 8-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 870 cents. How many 4-cent stamps are there?



오늘 5원짜리 8원짜리 우표 총 230 장을 사고, 1390 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 180 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1180 cents. How many 6-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 660 cents. How many 3-cent stamps are there?



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724    130 70 120 110 80 ( 510 )   120 120 150 130 100 ( 620 )   [[ 1130 ]]