Question

a model house is 2 feet long and 4 feet wide. the real house is 17 feet wide how long is the real house

Answer 1

Let N be the length of the real house.
To solve, write the equation in ratio -
    2/4 = N/17
2(17) = 4(N)
 34/4 = 4N/4
  N = 8.5
Therefore, the length of the real house is 8.5