457  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 120 heads of Chickens and Dogs together. Altogether there are 320 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 640 legs. How many chickens are there?



There are 240 heads of Chickens and Dogs together. Altogether there are 740 legs. How many chickens are there?

There are 190 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1020 cents. How many 6-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 950 cents. How many 5-cent stamps are there?



There are 200 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 130 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 850 cents. How many 5-cent stamps are there?



There are 230 stamps which are 6-cent stamps and 7-cent stamps. Altogether they cost 1500 cents. How many 6-cent stamps are there?

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