The scale of a model train is 4 inches to 30 feet. One of the cars of the model train is 6 inches long. What is the length, in feet, of the actual train car?
The answer is 45 feet. You would set up the problem as two ratios, 4 inches to 30 feet and 6 inches to x feet. You would then cross multiply to solve for x where 4x = 180 and x = 45 feet.
