239  Leg-Stamp
닭다리 개다리 2

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There are 90 heads of Chickens and Dogs together. Altogether there are 240 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



우리 안에 총 110 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 360 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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



There are 190 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?

There are 190 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1060 cents. How many 4-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1120 cents. How many 5-cent stamps are there?



오늘 7원짜리 6원짜리 우표 총 170장을 사고, 1090 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 260 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1380 cents. How many 7-cent stamps are there?



There are 210 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1150 cents. How many 6-cent stamps are there?

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