155  Leg-Stamp
닭다리 개다리 2

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There are 190 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



우리 안에 총 220 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 640 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 140 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?

There are 170 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 710 cents. How many 5-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



오늘 3원짜리 9원짜리 우표 총 150장을 사고, 870 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 150 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 770 cents. How many 3-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1410 cents. How many 8-cent stamps are there?

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