893  Leg-Stamp
닭다리 개다리 1

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There are 180 heads of Chickens and Dogs together. Altogether there are 480 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 130 heads of Chickens and Dogs together. Altogether there are 360 legs. How many chickens are there?



There are 220 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?



There are 180 heads of Chickens and Dogs together. Altogether there are 600 legs. How many chickens are there?

There are 200 stamps which are 6-cent stamps and 5-cent stamps. Altogether they cost 1070 cents. How many 6-cent stamps are there?



There are 240 stamps which are 8-cent stamps and 7-cent stamps. Altogether they cost 1810 cents. How many 8-cent stamps are there?



There are 180 stamps which are 6-cent stamps and 8-cent stamps. Altogether they cost 1300 cents. How many 6-cent stamps are there?



There are 240 stamps which are 5-cent stamps and 9-cent stamps. Altogether they cost 1720 cents. How many 5-cent stamps are there?



There are 270 stamps which are 3-cent stamps and 8-cent stamps. Altogether they cost 1410 cents. How many 3-cent stamps are there?

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