757  Leg-Stamp
닭다리 개다리 1

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There are 230 heads of Chickens and Dogs together. Altogether there are 700 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 190 heads of Chickens and Dogs together. Altogether there are 640 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 140 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?

There are 170 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 710 cents. How many 5-cent stamps are there?



There are 170 stamps which are 3-cent stamps and 5-cent stamps. Altogether they cost 690 cents. How many 3-cent stamps are there?



There are 140 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 940 cents. How many 6-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 9-cent stamps. Altogether they cost 1480 cents. How many 7-cent stamps are there?



There are 270 stamps which are 3-cent stamps and 7-cent stamps. Altogether they cost 1290 cents. How many 3-cent stamps are there?

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