Answer
Required proportion : $\frac{1 inch}{8 ft} = \frac{7.5 inch}{x ft}$
Solution : x = 60,
i.e. Actual height of the building is 60 ft.
Work Step by Step
On a scale model, 1 in. represents 8 ft. If a building in the model is 7.5 in. tall, what is the actual height of the building in feet?
As per the details given: $\frac{1 inch}{8 ft} = \frac{7.5 inch}{x ft}$ (Assumed x as a required gms of medication)
i.e. $1 \times x = 7.5 \times 8$ (As bot sides have same numerator and denominator)
$ x = 60 $
