436  Leg-Stamp
닭다리 개다리 1

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There are 200 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



There are 230 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 300 legs. How many chickens are there?



There are 90 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?

There are 180 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1100 cents. How many 5-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1160 cents. How many 8-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1700 cents. How many 8-cent stamps are there?



There are 180 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 930 cents. How many 4-cent stamps are there?



There are 220 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 920 cents. How many 5-cent stamps are there?

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