861  Leg-Stamp
닭다리 개다리 2

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There are 210 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 250 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?



우리 안에 총 130 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 340 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 110 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?

There are 150 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1280 cents. How many 8-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1300 cents. How many 5-cent stamps are there?



오늘 7원짜리 3원짜리 우표 총 190장을 사고, 1010 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 230 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1510 cents. How many 7-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 4-cent stamps are there?

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