274  Leg-Stamp
닭다리 개다리 1

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



There are 160 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 220 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?

There are 210 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 720 cents. How many 4-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 830 cents. How many 3-cent stamps are there?



There are 220 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1760 cents. How many 7-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1000 cents. How many 3-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1300 cents. How many 3-cent stamps are there?

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