748  Leg-Stamp
닭다리 개다리 2

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There are 150 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



우리 안에 총 220 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 600 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 200 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?

There are 210 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 980 cents. How many 3-cent stamps are there?



There are 140 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 880 cents. How many 7-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 200장을 사고, 1300 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 210 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 850 cents. How many 3-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 860 cents. How many 4-cent stamps are there?

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