783  Leg-Stamp
닭다리 개다리 2

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There are 200 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



우리 안에 총 200 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 580 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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



There are 180 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?

There are 230 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 4-cent stamps are there?



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?



오늘 3원짜리 9원짜리 우표 총 210장을 사고, 1290 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 190 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 770 cents. How many 5-cent stamps are there?



There are 270 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1760 cents. How many 7-cent stamps are there?

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