914  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 160 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 720 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 180 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 400 legs. How many chickens are there?

There are 200 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 950 cents. How many 4-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 850 cents. How many 5-cent stamps are there?



오늘 6원짜리 3원짜리 우표 총 140장을 사고, 630 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 230 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 910 cents. How many 3-cent stamps are there?



There are 250 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1360 cents. How many 4-cent stamps are there?

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