906  Leg-Stamp
닭다리 개다리 2

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There are 210 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



우리 안에 총 80 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 220 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



There are 100 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?

There are 190 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1120 cents. How many 3-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1650 cents. How many 5-cent stamps are there?



오늘 7원짜리 8원짜리 우표 총 150장을 사고, 1130 원을 지불 했을때, 몇개의 7원짜리 우표를 샀는가?



There are 190 stamps which are 7-cent stamps and 6-cent stamps. Altogether they cost 1230 cents. How many 7-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1350 cents. How many 7-cent stamps are there?

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