564  Leg-Stamp
닭다리 개다리 1

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There are 150 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 560 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



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

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



There are 150 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 800 cents. How many 5-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 3-cent stamps. Altogether they cost 930 cents. How many 6-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1080 cents. How many 4-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1060 cents. How many 5-cent stamps are there?

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