449  Leg-Stamp
닭다리 개다리 2

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There are 150 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 240 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



우리 안에 총 70 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 200 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 100 heads of Chickens and Dogs together. Altogether there are 320 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 180 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1240 cents. How many 8-cent stamps are there?



There are 130 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 790 cents. How many 8-cent stamps are there?



오늘 4원짜리 9원짜리 우표 총 210장을 사고, 1340 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 260 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 1040 cents. How many 5-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?

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