975  Leg-Stamp
닭다리 개다리 2

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There are 200 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



우리 안에 총 170 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 580 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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



There are 130 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 230 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1330 cents. How many 5-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?



오늘 4원짜리 8원짜리 우표 총 140장을 사고, 800 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1300 cents. How many 7-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 930 cents. How many 4-cent stamps are there?

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