565  Leg-Stamp
닭다리 개다리 2

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There are 120 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?



우리 안에 총 90 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 280 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 150 heads of Chickens and Dogs together. Altogether there are 400 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?

There are 240 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1050 cents. How many 3-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 690 cents. How many 6-cent stamps are there?



오늘 5원짜리 3원짜리 우표 총 260장을 사고, 1080 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 260 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1970 cents. How many 8-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1000 cents. How many 8-cent stamps are there?

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