463  Leg-Stamp
닭다리 개다리 2

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There are 120 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 500 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 70 heads of Chickens and Dogs together. Altogether there are 200 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?

There are 210 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1600 cents. How many 8-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1990 cents. How many 7-cent stamps are there?



오늘 7원짜리 5원짜리 우표 총 190장을 사고, 1170 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 170 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 930 cents. How many 4-cent stamps are there?



There are 230 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1710 cents. How many 8-cent stamps are there?

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