606  Leg-Stamp
닭다리 개다리 2

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There are 220 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



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



우리 안에 총 190 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 520 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 170 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



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

There are 250 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1050 cents. How many 3-cent stamps are there?



오늘 3원짜리 5원짜리 우표 총 230장을 사고, 890 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 270 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 1110 cents. How many 5-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1540 cents. How many 8-cent stamps are there?

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