992  Leg-Stamp
닭다리 개다리 2

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There are 210 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



우리 안에 총 230 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 700 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 170 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?

There are 200 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 730 cents. How many 3-cent stamps are there?



There are 270 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 950 cents. How many 4-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 270장을 사고, 1510 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 250 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1350 cents. How many 5-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1620 cents. How many 7-cent stamps are there?

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