526  Leg-Stamp
닭다리 개다리 2

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There are 110 heads of Chickens and Dogs together. Altogether there are 280 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?



우리 안에 총 140 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 460 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 220 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



There are 100 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?

There are 230 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1410 cents. How many 5-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 990 cents. How many 6-cent stamps are there?



오늘 8원짜리 9원짜리 우표 총 160장을 사고, 1350 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 200 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 950 cents. How many 8-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1250 cents. How many 7-cent stamps are there?

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