546  Leg-Stamp
닭다리 개다리 2

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There are 120 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



우리 안에 총 130 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 340 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 140 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1330 cents. How many 7-cent stamps are there?



There are 130 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 530 cents. How many 5-cent stamps are there?



오늘 6원짜리 3원짜리 우표 총 240장을 사고, 1140 원을 지불 했을때, 몇개의 6원짜리 우표를 샀는가?



There are 200 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1640 cents. How many 7-cent stamps are there?



There are 160 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1140 cents. How many 6-cent stamps are there?

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