105  Leg-Stamp
닭다리 개다리 2

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There are 180 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 250 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



우리 안에 총 270 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 800 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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



There are 190 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?

There are 130 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 730 cents. How many 6-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1250 cents. How many 5-cent stamps are there?



오늘 3원짜리 7원짜리 우표 총 200장을 사고, 960 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 240 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1190 cents. How many 7-cent stamps are there?

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