733  Leg-Stamp
닭다리 개다리 1

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There are 180 heads of Chickens and Dogs together. Altogether there are 520 legs. How many chickens are there?



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



There are 120 heads of Chickens and Dogs together. Altogether there are 340 legs. How many chickens are there?



There are 200 heads of Chickens and Dogs together. Altogether there are 540 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 560 legs. How many chickens are there?

There are 270 stamps which are 4-cent stamps and 8-cent stamps. Altogether they cost 1560 cents. How many 4-cent stamps are there?



There are 180 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 1060 cents. How many 5-cent stamps are there?



There are 190 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 890 cents. How many 7-cent stamps are there?



There are 170 stamps which are 4-cent stamps and 5-cent stamps. Altogether they cost 760 cents. How many 4-cent stamps are there?



There are 220 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1430 cents. How many 4-cent stamps are there?

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