904  Leg-Stamp
닭다리 개다리 1

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There are 180 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



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



There are 120 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?

There are 200 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1200 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1330 cents. How many 8-cent stamps are there?



There are 220 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1890 cents. How many 8-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?



There are 280 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1850 cents. How many 8-cent stamps are there?

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