180  Leg-Stamp
닭다리 개다리 2

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There are 170 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 240 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



우리 안에 총 140 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 380 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 90 heads of Chickens and Dogs together. Altogether there are 260 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1020 cents. How many 8-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?



오늘 4원짜리 7원짜리 우표 총 210장을 사고, 1140 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 190 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 790 cents. How many 5-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1280 cents. How many 6-cent stamps are there?

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