108  Leg-Stamp
닭다리 개다리 2

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There are 200 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



우리 안에 총 220 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 620 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 190 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?

There are 200 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1270 cents. How many 8-cent stamps are there?



There are 130 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1100 cents. How many 8-cent stamps are there?



오늘 5원짜리 6원짜리 우표 총 260장을 사고, 1420 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 170 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1350 cents. How many 7-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 920 cents. How many 5-cent stamps are there?

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