314  Leg-Stamp
닭다리 개다리 2

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There are 80 heads of Chickens and Dogs together. Altogether there are 220 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



우리 안에 총 220 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 620 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 220 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?

There are 280 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1270 cents. How many 5-cent stamps are there?



There are 190 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 860 cents. How many 5-cent stamps are there?



오늘 3원짜리 4원짜리 우표 총 260장을 사고, 890 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 190 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 860 cents. How many 5-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1600 cents. How many 7-cent stamps are there?

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