574  Leg-Stamp
닭다리 개다리 2

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There are 150 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 140 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 600 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 150 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?

There are 190 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1250 cents. How many 5-cent stamps are there?



There are 270 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1760 cents. How many 7-cent stamps are there?



오늘 6원짜리 5원짜리 우표 총 270장을 사고, 1490 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 200 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1480 cents. How many 7-cent stamps are there?



There are 260 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?

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