132  Leg-Stamp
닭다리 개다리 2

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



There are 220 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?



우리 안에 총 150 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 380 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 180 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



There are 220 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?

There are 220 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1640 cents. How many 8-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 860 cents. How many 4-cent stamps are there?



오늘 3원짜리 8원짜리 우표 총 160장을 사고, 830 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1230 cents. How many 5-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1430 cents. How many 7-cent stamps are there?

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