357  Leg-Stamp
닭다리 개다리 2

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There are 100 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?



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



우리 안에 총 160 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 380 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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



There are 150 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?

There are 170 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 860 cents. How many 8-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1350 cents. How many 8-cent stamps are there?



오늘 7원짜리 6원짜리 우표 총 230장을 사고, 1500 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 200 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1320 cents. How many 8-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1090 cents. How many 5-cent stamps are there?

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