269  Leg-Stamp
닭다리 개다리 2

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There are 120 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



우리 안에 총 250 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 740 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 130 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?

There are 210 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1460 cents. How many 6-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1040 cents. How many 4-cent stamps are there?



오늘 7원짜리 9원짜리 우표 총 240장을 사고, 1860 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 150 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 780 cents. How many 4-cent stamps are there?



There are 150 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 900 cents. How many 7-cent stamps are there?

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