258  Leg-Stamp
닭다리 개다리 1

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There are 180 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 580 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 150 heads of Chickens and Dogs together. Altogether there are 440 legs. How many chickens are there?



There are 120 heads of Chickens and Dogs together. Altogether there are 380 legs. How many chickens are there?

There are 210 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1360 cents. How many 8-cent stamps are there?



There are 150 stamps which are 5-cent stamps and 7-cent stamps. Altogether they cost 910 cents. How many 5-cent stamps are there?



There are 240 stamps which are 7-cent stamps and 5-cent stamps. Altogether they cost 1500 cents. How many 7-cent stamps are there?



There are 260 stamps which are 5-cent stamps and 6-cent stamps. Altogether they cost 1420 cents. How many 5-cent stamps are there?



There are 210 stamps which are 8-cent stamps and 9-cent stamps. Altogether they cost 1740 cents. How many 8-cent stamps are there?

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