482  Leg-Stamp
닭다리 개다리 2

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There are 170 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



우리 안에 총 120 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 380 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 170 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



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

There are 210 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1030 cents. How many 3-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 770 cents. How many 4-cent stamps are there?



오늘 4원짜리 9원짜리 우표 총 200장을 사고, 1050 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 150 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 690 cents. How many 5-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 640 cents. How many 3-cent stamps are there?

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