829  Leg-Stamp
닭다리 개다리 1

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There are 210 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 420 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 210 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?



There are 110 heads of Chickens and Dogs together. Altogether there are 280 legs. How many chickens are there?

There are 170 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1050 cents. How many 7-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 1000 cents. How many 7-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1160 cents. How many 5-cent stamps are there?



There are 210 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1440 cents. How many 4-cent stamps are there?



There are 160 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 780 cents. How many 3-cent stamps are there?

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