244  Leg-Stamp
닭다리 개다리 2

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There are 170 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



우리 안에 총 240 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 700 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 140 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?

There are 150 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 270 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 930 cents. How many 3-cent stamps are there?



오늘 8원짜리 4원짜리 우표 총 210장을 사고, 1360 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 210 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1370 cents. How many 7-cent stamps are there?



There are 150 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 720 cents. How many 6-cent stamps are there?

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