324  Leg-Stamp
닭다리 개다리 2

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There are 80 heads of Chickens and Dogs together. Altogether there are 220 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 300 legs. How many chickens are there?



우리 안에 총 190 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 640 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 170 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?

There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1020 cents. How many 8-cent stamps are there?



There are 140 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1170 cents. How many 8-cent stamps are there?



오늘 7원짜리 9원짜리 우표 총 150장을 사고, 1150 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 140 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 780 cents. How many 6-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1460 cents. How many 6-cent stamps are there?

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