452  Leg-Stamp
닭다리 개다리 2

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There are 130 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 190 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 340 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 130 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 250 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?

There are 240 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1410 cents. How many 4-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1210 cents. How many 5-cent stamps are there?



오늘 5원짜리 4원짜리 우표 총 250장을 사고, 1130 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 140 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 710 cents. How many 4-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 880 cents. How many 3-cent stamps are there?

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