769  Leg-Stamp
닭다리 개다리 2

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There are 170 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 220 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



우리 안에 총 240 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 680 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 170 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?

There are 260 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 1140 cents. How many 3-cent stamps are there?



There are 180 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1550 cents. How many 8-cent stamps are there?



오늘 7원짜리 8원짜리 우표 총 210장을 사고, 1540 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 190 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 890 cents. How many 7-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 720 cents. How many 3-cent stamps are there?

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