331  Leg-Stamp
닭다리 개다리 2

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There are 110 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



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



우리 안에 총 250 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 720 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 180 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 230 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1510 cents. How many 5-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1060 cents. How many 8-cent stamps are there?



오늘 8원짜리 9원짜리 우표 총 250장을 사고, 2130 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 210 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1030 cents. How many 3-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1810 cents. How many 8-cent stamps are there?

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