196  Leg-Stamp
닭다리 개다리 1

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There are 100 heads of Chickens and Dogs together. Altogether there are 320 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 480 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 130 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens 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 200 stamps which are 6-cent stamps and 4-cent stamps. Altogether they cost 1060 cents. How many 6-cent stamps are there?



There are 160 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1330 cents. How many 8-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1230 cents. How many 8-cent stamps are there?



There are 260 stamps which are 4-cent stamps and 7-cent stamps. Altogether they cost 1430 cents. How many 4-cent stamps are there?

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