364  Leg-Stamp
닭다리 개다리 2

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There are 130 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



우리 안에 총 260 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 760 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 140 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 210 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 900 cents. How many 3-cent stamps are there?



There are 120 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 460 cents. How many 3-cent stamps are there?



오늘 6원짜리 8원짜리 우표 총 230장을 사고, 1560 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 220 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 820 cents. How many 6-cent stamps are there?

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