486  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 130 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 360 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 160 heads of Chickens and Dogs together. Altogether there are 500 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 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1130 cents. How many 5-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 810 cents. How many 4-cent stamps are there?



오늘 5원짜리 7원짜리 우표 총 190장을 사고, 1110 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 190 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 670 cents. How many 4-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1190 cents. How many 4-cent stamps are there?

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