A plane averaged 800 mph on a trip going east, but only 400 mph on the return trip. The total flying time in both directions was 4.5 hr. What was the one-way distance?

1200 miles.

Step-by-step explanation:

Let d represent one way distance.

We have been given that a plane averaged 800 mph on a trip going east, but only 400 mph on the return trip.

The time taken while going east would be .

The time taken while returning back would be .

Since the total flying time in both directions was 4.5 hr, so we will equate sum of both times with 4.5 as:

Make a common denominator:

Therefore, the one-way distance was 1200 miles.

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.

step-by-step explanation: