743  Leg-Stamp
닭다리 개다리 2

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There are 220 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 440 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 230 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



There are 220 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?

There are 120 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 650 cents. How many 5-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1440 cents. How many 8-cent stamps are there?



오늘 7원짜리 9원짜리 우표 총 140장을 사고, 1080 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 180 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 980 cents. How many 7-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 660 cents. How many 3-cent stamps are there?

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