423  Leg-Stamp
닭다리 개다리 1

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There are 150 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 720 legs. How many chickens are there?



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



There are 130 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?

There are 180 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1000 cents. How many 5-cent stamps are there?



There are 130 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 550 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1700 cents. How many 8-cent stamps are there?



There are 190 stamps which are 4-cent stamps and 6-cent stamps. Altogether they cost 980 cents. How many 4-cent stamps are there?



There are 210 stamps which are 7-cent stamps and 4-cent stamps. Altogether they cost 1080 cents. How many 7-cent stamps are there?

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