158  Leg-Stamp
닭다리 개다리 1

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There are 230 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 140 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 100 heads of Chickens and Dogs together. Altogether there are 260 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



There are 80 heads of Chickens and Dogs together. Altogether there are 220 legs. How many chickens are there?

There are 210 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1350 cents. How many 8-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1260 cents. How many 5-cent stamps are there?



There are 200 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1300 cents. How many 8-cent stamps are there?



There are 160 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1210 cents. How many 7-cent stamps are there?



There are 210 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1410 cents. How many 5-cent stamps are there?

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