494  Leg-Stamp
닭다리 개다리 2

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



There are 200 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?



우리 안에 총 80 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 220 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 160 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?

There are 240 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1550 cents. How many 6-cent stamps are there?



There are 140 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 660 cents. How many 3-cent stamps are there?



오늘 3원짜리 9원짜리 우표 총 170장을 사고, 1110 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 190 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 640 cents. How many 3-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 910 cents. How many 4-cent stamps are there?

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