981  Leg-Stamp
닭다리 개다리 1

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There are 180 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



There are 80 heads of Chickens and Dogs together. Altogether there are 220 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 220 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1280 cents. How many 4-cent stamps are there?



There are 150 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 870 cents. How many 3-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1360 cents. How many 4-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 960 cents. How many 8-cent stamps are there?



There are 180 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 640 cents. How many 3-cent stamps are there?

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