960  Leg-Stamp
닭다리 개다리 2

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There are 230 heads of Chickens and Dogs together. Altogether there are 660 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?



우리 안에 총 210 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 620 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 80 heads of Chickens and Dogs together. Altogether there are 220 legs. How many chickens are there?



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

There are 170 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 920 cents. How many 4-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1900 cents. How many 7-cent stamps are there?



오늘 3원짜리 9원짜리 우표 총 140장을 사고, 840 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 210 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 950 cents. How many 7-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 740 cents. How many 3-cent stamps are there?

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