977  Leg-Stamp
닭다리 개다리 2

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There are 230 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



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



우리 안에 총 160 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 440 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 130 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 680 legs. How many chickens are there?

There are 140 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 760 cents. How many 5-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1130 cents. How many 5-cent stamps are there?



오늘 8원짜리 6원짜리 우표 총 160장을 사고, 1180 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



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



There are 260 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1560 cents. How many 5-cent stamps are there?

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