416  Leg-Stamp
닭다리 개다리 2

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There are 110 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



우리 안에 총 140 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 480 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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



There are 140 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?

There are 240 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1440 cents. How many 3-cent stamps are there?



There are 130 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1030 cents. How many 7-cent stamps are there?



오늘 8원짜리 3원짜리 우표 총 200장을 사고, 1000 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 170 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1200 cents. How many 8-cent stamps are there?



There are 260 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1690 cents. How many 7-cent stamps are there?

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