Question

Lambert High School is planning on building a new indoor batting practice building. The length of the building on the blueprint is 20 inches. The scale factor for the new building is 1 inch = 2.5 feet. What will the actual length of the building be?

Answer 1

The answer is 50 ft.

20 x 2.5 = 50 ft

Answer 2

Sure, let me help you!

First of all, let's transform these feet to inches so it's easier for us to comprehend the problem. 

1 foot is 12 inches.

2 feet is 24 inches + 0.5(12) = 30 inches

The scale factor is 1 inch = 30 inches, meaning that blueprint is 30 times smaller that an actual length of the building.

Since the length on the blueprint is 20 inches, we need to multiply that by 30.

20*30 = 600.

Answer: 600 inches is the actual length of the building.