161  Leg-Stamp
닭다리 개다리 1

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There are 270 heads of Chickens and Dogs together. Altogether there are 800 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 520 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 170 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 200 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1340 cents. How many 8-cent stamps are there?



There are 250 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1530 cents. How many 7-cent stamps are there?



There are 170 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 990 cents. How many 7-cent stamps are there?



There are 230 stamps which are 3-cent stamps and 4-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 950 cents. How many 5-cent stamps are there?

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