961  Leg-Stamp
닭다리 개다리 2

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There are 270 heads of Chickens and Dogs together. Altogether there are 800 legs. How many chickens are there?



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



우리 안에 총 240 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 700 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 200 heads of Chickens and Dogs together. Altogether there are 660 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 230 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1960 cents. How many 8-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1370 cents. How many 4-cent stamps are there?



오늘 7원짜리 4원짜리 우표 총 200장을 사고, 1250 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 270 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1640 cents. How many 8-cent stamps are there?



There are 250 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1170 cents. How many 6-cent stamps are there?

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