803  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 150 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 360 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 120 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 170 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1250 cents. How many 5-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?



오늘 7원짜리 4원짜리 우표 총 160장을 사고, 940 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 240 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1120 cents. How many 3-cent stamps are there?



There are 260 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1440 cents. How many 3-cent stamps are there?

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