963  Leg-Stamp
닭다리 개다리 2

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There are 250 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



우리 안에 총 200 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 640 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 150 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 100 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?

There are 270 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 2150 cents. How many 7-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1450 cents. How many 4-cent stamps are there?



오늘 5원짜리 7원짜리 우표 총 240장을 사고, 1460 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



There are 210 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1180 cents. How many 3-cent stamps are there?

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