371  Leg-Stamp
닭다리 개다리 1

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There are 180 heads of Chickens and Dogs together. Altogether there are 600 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 210 heads of Chickens and Dogs together. Altogether there are 660 legs. How many chickens are there?



There are 190 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?



There are 170 heads of Chickens and Dogs together. Altogether there are 480 legs. How many chickens are there?

There are 160 stamps which are 7-cent stamps and 3-cent stamps. Altogether they cost 760 cents. How many 7-cent stamps are there?



There are 250 stamps which are 3-cent stamps and 9-cent stamps. Altogether they cost 1530 cents. How many 3-cent stamps are there?



There are 190 stamps which are 8-cent stamps and 3-cent stamps. Altogether they cost 1070 cents. How many 8-cent stamps are there?



There are 260 stamps which are 8-cent stamps and 4-cent stamps. Altogether they cost 1600 cents. How many 8-cent stamps are there?



There are 170 stamps which are 8-cent stamps and 5-cent stamps. Altogether they cost 1150 cents. How many 8-cent stamps are there?

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