Problema Solution
At a concession stand,7 hot dogs and 2 hamburgers cost 10.00; 2 hot dogs and 7 hamburgers cost 12.50. Find the cost of one hot dog and one hamburger.
Answer provided by our tutors
let 'd' represent the cost of a hot dog and 'b' represent the cost of a hamburger
10.00 = 7d + 2b
12.50 = 2d + 7b
solving this system we have:
d = 1.00
b = 1.50
the cost of a hamburger is $1.50, the cost of a hot dog is $1.00