753  Leg-Stamp
닭다리 개다리 1

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There are 210 heads of Chickens and Dogs together. Altogether there are 620 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 180 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 210 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?



There are 130 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?

There are 230 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1350 cents. How many 3-cent stamps are there?



There are 130 stamps which are 5-cent stamps and 8-cent stamps. Altogether they cost 830 cents. How many 5-cent stamps are there?



There are 250 stamps which are 5-cent stamps and 4-cent stamps. Altogether they cost 1140 cents. How many 5-cent stamps are there?



There are 230 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1450 cents. How many 7-cent stamps are there?



There are 180 stamps which are 7-cent stamps and 8-cent stamps. Altogether they cost 1370 cents. How many 7-cent stamps are there?

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