708  Leg-Stamp
닭다리 개다리 2

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



There are 110 heads of Chickens and Dogs together. Altogether there are 300 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 460 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 130 heads of Chickens and Dogs together. Altogether there are 440 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 220 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1380 cents. How many 5-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1410 cents. How many 6-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 140장을 사고, 770 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 230 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1390 cents. How many 7-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1200 cents. How many 8-cent stamps are there?

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