788  Leg-Stamp
닭다리 개다리 2

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



There are 140 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



우리 안에 총 230 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 640 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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



There are 170 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?

There are 150 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 850 cents. How many 3-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1260 cents. How many 3-cent stamps are there?



오늘 7원짜리 5원짜리 우표 총 190장을 사고, 1090 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 240 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1380 cents. How many 3-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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