Question

A guy drives 140 miles in the same amount of time a plane traveled 460 miles. The speed of the plane was 160 miles per hour faster than the car. Find the speed of the plane

Answer 1

Answer: 230 miles/hour

Explanation:

Eq1: Splane * time = 460

Eq2: (Splane - 160) * time = 140

Splane*time - 160*time = 140

Plug Eq1 into Eq2:

460 - 160*time = 140

320 = 160*time

Time = 2 hours

Plug into Eq1: Splane * 2 = 460

Splane = 230 miles/hour