242  Leg-Stamp
닭다리 개다리 2

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There are 100 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



우리 안에 총 250 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 740 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 110 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



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

There are 150 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1000 cents. How many 7-cent stamps are there?



There are 220 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there?



오늘 6원짜리 8원짜리 우표 총 200장을 사고, 1300 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 190 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 930 cents. How many 6-cent stamps are there?



There are 150 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1120 cents. How many 8-cent stamps are there?

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