169  Leg-Stamp
닭다리 개다리 2

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There are 240 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?



우리 안에 총 170 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 440 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 140 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?

There are 230 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1480 cents. How many 7-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 960 cents. How many 4-cent stamps are there?



오늘 5원짜리 7원짜리 우표 총 240장을 사고, 1460 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 260 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 1200 cents. How many 6-cent stamps are there?



There are 230 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1470 cents. How many 4-cent stamps are there?

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