608  Leg-Stamp
닭다리 개다리 1

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



There are 150 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?



There are 220 heads of Chickens and Dogs together. Altogether there are 700 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 560 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 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1500 cents. How many 8-cent stamps are there?



There are 130 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1010 cents. How many 7-cent stamps are there?



There are 250 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1600 cents. How many 6-cent stamps are there?



There are 130 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 760 cents. How many 4-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1050 cents. How many 3-cent stamps are there?

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