299  Leg-Stamp
닭다리 개다리 2

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There are 180 heads of Chickens and Dogs together. Altogether there are 620 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 200 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 660 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 180 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1270 cents. How many 5-cent stamps are there?



There are 190 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 770 cents. How many 3-cent stamps are there?



오늘 3원짜리 6원짜리 우표 총 270장을 사고, 1170 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 160 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1010 cents. How many 8-cent stamps are there?



There are 240 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1440 cents. How many 4-cent stamps are there?

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