547  Leg-Stamp
닭다리 개다리 2

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There are 140 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



우리 안에 총 130 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 340 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 140 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?

There are 210 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1080 cents. How many 4-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 1050 cents. How many 4-cent stamps are there?



오늘 8원짜리 4원짜리 우표 총 170장을 사고, 1080 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 240 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1480 cents. How many 7-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1500 cents. How many 5-cent stamps are there?

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