951  Leg-Stamp
닭다리 개다리 2

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



There are 120 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



우리 안에 총 130 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 420 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 120 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?

There are 210 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1410 cents. How many 5-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 820 cents. How many 6-cent stamps are there?



오늘 7원짜리 9원짜리 우표 총 170장을 사고, 1350 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 140 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 980 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1050 cents. How many 8-cent stamps are there?

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