726  Leg-Stamp
닭다리 개다리 2

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There are 230 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?



There are 270 heads of Chickens and Dogs together. Altogether there are 800 legs. How many chickens are there?



우리 안에 총 170 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 500 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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



There are 160 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?

There are 180 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1100 cents. How many 7-cent stamps are there?



There are 270 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1630 cents. How many 7-cent stamps are there?



오늘 8원짜리 7원짜리 우표 총 160장을 사고, 1220 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 180 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1060 cents. How many 7-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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