166  Leg-Stamp
닭다리 개다리 2

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There are 220 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 250 heads of Chickens and Dogs together. Altogether there are 760 legs. How many chickens are there?



우리 안에 총 140 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 400 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 230 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?

There are 200 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 930 cents. How many 4-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1090 cents. How many 7-cent stamps are there?



오늘 8원짜리 4원짜리 우표 총 220장을 사고, 1280 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 190 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 670 cents. How many 4-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1200 cents. How many 4-cent stamps are there?

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