573  Leg-Stamp
닭다리 개다리 2

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There are 180 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 300 legs. How many chickens are there?



우리 안에 총 110 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 320 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 200 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?

There are 180 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 980 cents. How many 6-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1080 cents. How many 3-cent stamps are there?



오늘 8원짜리 6원짜리 우표 총 200장을 사고, 1340 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 180 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 800 cents. How many 5-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1490 cents. How many 5-cent stamps are there?

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