574  Leg-Stamp
닭다리 개다리 2

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



There are 200 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



우리 안에 총 110 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 320 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 170 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?

There are 240 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 960 cents. How many 5-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 720 cents. How many 5-cent stamps are there?



오늘 7원짜리 4원짜리 우표 총 230장을 사고, 1370 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 200 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1080 cents. How many 4-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 850 cents. How many 3-cent stamps are there?

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