585  Leg-Stamp
닭다리 개다리 2

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



There are 220 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



우리 안에 총 170 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 440 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 120 heads of Chickens and Dogs together. Altogether there are 300 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?

There are 200 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1360 cents. How many 8-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1070 cents. How many 3-cent stamps are there?



오늘 4원짜리 3원짜리 우표 총 240장을 사고, 830 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 210 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1590 cents. How many 6-cent stamps are there?



There are 200 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 880 cents. How many 5-cent stamps are there?

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