305  Leg-Stamp
닭다리 개다리 2

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There are 140 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



우리 안에 총 210 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 580 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 120 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?

There are 190 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 970 cents. How many 3-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1220 cents. How many 4-cent stamps are there?



오늘 5원짜리 9원짜리 우표 총 190장을 사고, 1230 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 220 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1360 cents. How many 4-cent stamps are there?



There are 250 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1880 cents. How many 8-cent stamps are there?

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