829  Leg-Stamp
닭다리 개다리 2

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There are 210 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 500 legs. How many chickens are there?



우리 안에 총 70 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 200 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 150 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 150 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1110 cents. How many 6-cent stamps are there?



오늘 5원짜리 8원짜리 우표 총 140장을 사고, 880 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 190 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 870 cents. How many 6-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1170 cents. How many 3-cent stamps are there?

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