465  Leg-Stamp
닭다리 개다리 2

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There are 160 heads of Chickens and Dogs together. Altogether there are 500 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 120 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 380 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 500 legs. How many chickens are there?

There are 170 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1220 cents. How many 6-cent stamps are there?



There are 150 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 660 cents. How many 6-cent stamps are there?



오늘 5원짜리 3원짜리 우표 총 190장을 사고, 730 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 250 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1800 cents. How many 8-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1150 cents. How many 7-cent stamps are there?

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