940  Leg-Stamp
닭다리 개다리 2

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There are 240 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



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



우리 안에 총 190 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 580 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 130 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?

There are 200 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?



There are 130 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 640 cents. How many 3-cent stamps are there?



오늘 5원짜리 4원짜리 우표 총 250장을 사고, 1120 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 230 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 1180 cents. How many 4-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1120 cents. How many 5-cent stamps are there?

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