524  Leg-Stamp
닭다리 개다리 2

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There are 180 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



우리 안에 총 190 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 620 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 160 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 250 heads of Chickens and Dogs together. Altogether there are 760 legs. How many chickens are there?

There are 150 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 920 cents. How many 8-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 810 cents. How many 3-cent stamps are there?



오늘 6원짜리 3원짜리 우표 총 170장을 사고, 750 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 230 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1200 cents. How many 6-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1660 cents. How many 8-cent stamps are there?

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