598  Leg-Stamp
닭다리 개다리 2

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There are 170 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 420 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 140 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?

There are 270 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 2010 cents. How many 7-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1510 cents. How many 6-cent stamps are there?



오늘 5원짜리 7원짜리 우표 총 170장을 사고, 1010 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 220 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1420 cents. How many 6-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 940 cents. How many 8-cent stamps are there?

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