446  Leg-Stamp
닭다리 개다리 2

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There are 170 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



There are 260 heads of Chickens and Dogs together. Altogether there are 760 legs. How many chickens are there?



우리 안에 총 140 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 480 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 150 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?

There are 160 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 840 cents. How many 3-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 760 cents. How many 3-cent stamps are there?



오늘 4원짜리 5원짜리 우표 총 210장을 사고, 950 원을 지불 했을때, 몇개의 4원짜리 우표를 샀는가?



There are 170 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 770 cents. How many 5-cent stamps are there?



There are 240 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1640 cents. How many 6-cent stamps are there?

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