906  Leg-Stamp
닭다리 개다리 1

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There are 250 heads of Chickens and Dogs together. Altogether there are 760 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?

There are 180 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 740 cents. How many 3-cent stamps are there?



There are 270 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1680 cents. How many 8-cent stamps are there?



There are 200 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 900 cents. How many 3-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1170 cents. How many 5-cent stamps are there?



There are 270 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1560 cents. How many 4-cent stamps are there?

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