228  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 190 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



우리 안에 총 110 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 280 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 160 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?

There are 220 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 6-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1630 cents. How many 8-cent stamps are there?



오늘 3원짜리 5원짜리 우표 총 200장을 사고, 860 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 180 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1290 cents. How many 6-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?

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