971  Leg-Stamp
닭다리 개다리 1

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There are 180 heads of Chickens and Dogs together. Altogether there are 460 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 640 legs. How many chickens are there?



There are 220 heads of Chickens and Dogs together. Altogether there are 600 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 210 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?

There are 190 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1590 cents. How many 8-cent stamps are there?



There are 160 stamps which are 4-cent stamps and 3-cent stamps. Altogether they cost 560 cents. How many 4-cent stamps are there?



There are 160 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1160 cents. How many 5-cent stamps are there?



There are 140 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 880 cents. How many 8-cent stamps are there?



There are 120 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 740 cents. How many 7-cent stamps are there?

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