519  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 90 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 540 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 580 legs. How many chickens are there?



There are 150 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?

There are 210 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1380 cents. How many 8-cent stamps are there?



There are 170 stamps which are 6-cent stamps and 9-cent stamps. Altogether they cost 1200 cents. How many 6-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 6-cent stamps. Altogether they cost 1680 cents. How many 8-cent stamps are there?



There are 140 stamps which are 5-cent stamps and 3-cent stamps. Altogether they cost 600 cents. How many 5-cent stamps are there?



There are 200 stamps which are 4-cent stamps and 9-cent stamps. Altogether they cost 1450 cents. How many 4-cent stamps are there?

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