770  Leg-Stamp
닭다리 개다리 1

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There are 190 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 500 legs. How many chickens are there?



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



There are 200 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?

There are 150 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 500 cents. How many 3-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1190 cents. How many 5-cent stamps are there?



There are 200 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1260 cents. How many 6-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 860 cents. How many 8-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 6-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?

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