796  Leg-Stamp
닭다리 개다리 2

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There are 160 heads of Chickens and Dogs together. Altogether there are 420 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 160 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 400 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 270 heads of Chickens and Dogs together. Altogether there are 800 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?



There are 220 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1560 cents. How many 6-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1220 cents. How many 8-cent stamps are there?



오늘 7원짜리 4원짜리 우표 총 210장을 사고, 1260 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 170 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 750 cents. How many 3-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1460 cents. How many 8-cent stamps are there?



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