836  Leg-Stamp
닭다리 개다리 2

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There are 160 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 400 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 90 heads of Chickens and Dogs together. Altogether there are 260 legs. How many chickens are there?

There are 220 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 780 cents. How many 4-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1360 cents. How many 7-cent stamps are there?



오늘 8원짜리 9원짜리 우표 총 190장을 사고, 1630 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 150 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 540 cents. How many 4-cent stamps are there?



There are 140 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 880 cents. How many 7-cent stamps are there?

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