706  Leg-Stamp
닭다리 개다리 2

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There are 140 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



우리 안에 총 160 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 500 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 160 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?

There are 260 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1780 cents. How many 6-cent stamps are there?



There are 150 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1050 cents. How many 6-cent stamps are there?



오늘 8원짜리 9원짜리 우표 총 220장을 사고, 1870 원을 지불 했을때, 몇개의 8원짜리 우표를 샀는가?



There are 190 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1190 cents. How many 7-cent stamps are there?



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

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