524  Leg-Stamp
닭다리 개다리 1

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There are 110 heads of Chickens and Dogs together. Altogether there are 280 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 190 heads of Chickens and Dogs together. Altogether there are 620 legs. How many chickens are there?



There are 160 heads of Chickens and Dogs together. Altogether there are 400 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 420 legs. How many chickens are there?

There are 230 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1470 cents. How many 5-cent stamps are there?



There are 230 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1670 cents. How many 5-cent stamps are there?



There are 170 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 940 cents. How many 5-cent stamps are there?



There are 140 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 810 cents. How many 4-cent stamps are there?



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

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