234  Leg-Stamp
닭다리 개다리 2

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There are 70 heads of Chickens and Dogs together. Altogether there are 200 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 440 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 240 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



There are 270 heads of Chickens and Dogs together. Altogether there are 800 legs. How many chickens are there?

There are 210 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 930 cents. How many 3-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1040 cents. How many 7-cent stamps are there?



오늘 4원짜리 8원짜리 우표 총 180장을 사고, 920 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 250 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1420 cents. How many 7-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1180 cents. How many 8-cent stamps are there?

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