218  Leg-Stamp
닭다리 개다리 2

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There are 150 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 80 heads of Chickens and Dogs together. Altogether there are 220 legs. How many chickens are there?



우리 안에 총 170 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 440 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 740 legs. How many chickens are there?

There are 250 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1300 cents. How many 3-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 810 cents. How many 5-cent stamps are there?



오늘 5원짜리 9원짜리 우표 총 250장을 사고, 1770 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 150 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1060 cents. How many 8-cent stamps are there?



There are 280 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1720 cents. How many 8-cent stamps are there?

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