315  Leg-Stamp
닭다리 개다리 2

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There are 120 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



우리 안에 총 260 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 760 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 130 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?

There are 210 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 960 cents. How many 5-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 740 cents. How many 4-cent stamps are there?



오늘 8원짜리 7원짜리 우표 총 230장을 사고, 1750 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 160 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1000 cents. How many 7-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1090 cents. How many 4-cent stamps are there?

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