379  Leg-Stamp
닭다리 개다리 2

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There are 110 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



우리 안에 총 230 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 640 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 110 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?

There are 230 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1130 cents. How many 3-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 790 cents. How many 3-cent stamps are there?



오늘 6원짜리 9원짜리 우표 총 170장을 사고, 1260 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 150 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 750 cents. How many 4-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 640 cents. How many 3-cent stamps are there?

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