173  Leg-Stamp
닭다리 개다리 2

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There are 250 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?



There are 240 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



우리 안에 총 180 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 480 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 150 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?

There are 280 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 1100 cents. How many 3-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1520 cents. How many 8-cent stamps are there?



오늘 7원짜리 4원짜리 우표 총 250장을 사고, 1360 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 180 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1260 cents. How many 8-cent stamps are there?



There are 270 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1830 cents. How many 5-cent stamps are there?

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