There are cows and chickens in a barn along with a three-legged dog named Tripod. If there are twice as many chickens as cows, how many legs are there in the barn. (Call the number of cows n.)
Number of cows = n
Number of cows legs = 4n
Number of chickens = 2n
Number of chicken legs = 2*2n = 4n
Tripod legs = 3
Total legs = 4n + 4n + 3
8n + 3
Number of cows = n
Number of cows legs = 4n
Number of chickens = 2n
Number of chicken legs = 2*2n = 4n
Tripod legs = 3
Total legs = 4n + 4n + 3
8n + 3