985  Leg-Stamp
닭다리 개다리 2

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There are 210 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 400 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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



There are 150 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?

There are 140 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 740 cents. How many 7-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1560 cents. How many 5-cent stamps are there?



오늘 4원짜리 5원짜리 우표 총 140장을 사고, 610 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 220 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1360 cents. How many 4-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1210 cents. How many 3-cent stamps are there?

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