995  Leg-Stamp
닭다리 개다리 2

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There are 230 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



우리 안에 총 90 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 240 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 170 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



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

There are 240 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1600 cents. How many 5-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1100 cents. How many 4-cent stamps are there?



오늘 3원짜리 7원짜리 우표 총 230장을 사고, 1130 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 150 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 950 cents. How many 4-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 960 cents. How many 4-cent stamps are there?

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