935  Leg-Stamp
닭다리 개다리 2

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There are 250 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?



우리 안에 총 70 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 200 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 150 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



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

There are 230 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1710 cents. How many 7-cent stamps are there?



There are 140 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 770 cents. How many 6-cent stamps are there?



오늘 5원짜리 7원짜리 우표 총 230장을 사고, 1410 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 190 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 680 cents. How many 3-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1830 cents. How many 8-cent stamps are there?

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