780  Leg-Stamp
닭다리 개다리 2

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There are 230 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



우리 안에 총 230 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 680 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 230 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?

There are 160 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 980 cents. How many 5-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1290 cents. How many 7-cent stamps are there?



오늘 5원짜리 3원짜리 우표 총 140장을 사고, 560 원을 지불 했을때, 몇개의 5원짜리 우표를 샀는가?



There are 180 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 800 cents. How many 5-cent stamps are there?



There are 190 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1210 cents. How many 6-cent stamps are there?

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