698  Leg-Stamp
닭다리 개다리 2

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There are 140 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



우리 안에 총 170 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 520 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 200 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 300 legs. How many chickens are there?

There are 260 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 1020 cents. How many 3-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 730 cents. How many 5-cent stamps are there?



오늘 3원짜리 5원짜리 우표 총 220장을 사고, 900 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 180 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1370 cents. How many 8-cent stamps are there?



There are 140 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 740 cents. How many 6-cent stamps are there?

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