395  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 230 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



우리 안에 총 110 마리의 닭과 개가 있다. 다리를 세어보니, 총합쳐서 300 다리가 있다. 몇마리의 닭이 우리 안에 있는가?



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



There are 90 heads of Chickens and Dogs together. Altogether there are 260 legs. How many chickens are there?

There are 260 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1340 cents. How many 7-cent stamps are there?



There are 220 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1650 cents. How many 6-cent stamps are there?



오늘 3원짜리 5원짜리 우표 총 130장을 사고, 510 원을 지불 했을때, 몇개의 3원짜리 우표를 샀는가?



There are 170 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 1030 cents. How many 5-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1350 cents. How many 7-cent stamps are there?

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