534  Leg-Stamp
닭다리 개다리 2

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There are 210 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



There are 270 heads of Chickens and Dogs together. Altogether there are 800 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 420 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 120 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 90 heads of Chickens and Dogs together. Altogether there are 240 legs. How many chickens are there?

There are 190 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1080 cents. How many 6-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 670 cents. How many 3-cent stamps are there?



오늘 3원짜리 7원짜리 우표 총 230장을 사고, 1170 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 200 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1160 cents. How many 4-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1640 cents. How many 5-cent stamps are there?

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