If a conveyor belt moves about 450 ft in 3/8 h, what is the unit rate?

450 / (3/8) = x / 1 ... 450 ft to 3/8 hr = x ft to 1 hr

cross multiply because this is a proportion

(3/8) (x) = (450) (1)

3/8x = 450

x = 450 * 8/3

x = 3600/3 reduces to 1200

so the conveyor belt moves at the unit rate of 1200 ft per hr