360  Leg-Stamp
닭다리 개다리 2

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There are 140 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



우리 안에 총 220 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 700 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 140 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 220 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1120 cents. How many 6-cent stamps are there?



There are 120 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 890 cents. How many 7-cent stamps are there?



오늘 3원짜리 6원짜리 우표 총 230장을 사고, 960 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 180 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 820 cents. How many 4-cent stamps are there?

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