968  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 180 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



우리 안에 총 180 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 500 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 250 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?

There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 770 cents. How many 4-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1660 cents. How many 6-cent stamps are there?



오늘 4원짜리 7원짜리 우표 총 230장을 사고, 1220 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 200 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1250 cents. How many 6-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 900 cents. How many 4-cent stamps are there?

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