130  Leg-Stamp
닭다리 개다리 2

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There are 180 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 100 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



우리 안에 총 210 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 600 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 240 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 210 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1330 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1380 cents. How many 8-cent stamps are there?



오늘 5원짜리 8원짜리 우표 총 270장을 사고, 1740 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 170 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 860 cents. How many 3-cent stamps are there?



There are 130 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 620 cents. How many 4-cent stamps are there?

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