On the blueprint of their new​ home, Ben and Heather notice the bathtub measures 3 in. by 6 in. They know that the actual bathtub will be 7.2 ft long. How wide will the tub​ be?

The width of the tub will be

1 answer

3 in.

To find the width, we first convert the length of the bathtub to inches:
7.2 ft * 12 in/ft = 86.4 in

Then, we use the ratio of the dimensions on the blueprint to find the width:
3 in / 6 in = x in / 86.4 in

Cross multiplying:
(3 in)(86.4 in) = (6 in)(x in)
259.2 = 6x

Dividing by 6:
x = 43.2

Therefore, the width of the tub will be 43.2 inches.