219  Leg-Stamp
닭다리 개다리 2

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There are 150 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



우리 안에 총 180 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 460 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 210 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?

There are 160 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1120 cents. How many 5-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1390 cents. How many 6-cent stamps are there?



오늘 3원짜리 4원짜리 우표 총 210장을 사고, 750 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 250 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1380 cents. How many 5-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 870 cents. How many 4-cent stamps are there?

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