Question

Question:

The time for a commercial jet to fly
a certain distance varies inversely
with the rate of speed. A typical
commercial jet can cover 1000
miles in 2 hours when flying at 500
mph.
Find the time to cover the same
distance at 550 mph. (round to the
nearest tenth).

Answer 1

1.8

Explanation:

Answer 2

1.8hours

Explanation:

We can start by using the formula for inverse variation:

time = k/ratewhere k is the constant of variation.

To find k, we can use the given information that a jet can cover 1000 miles in 2 hours at 500 mph:

2 = k/500

Solving for k, we get:

k = 1000

Now we can use this value of k to find the time to cover 1000 miles at 550 mph:

time = 1000/550time ≈ 1.8 hours (rounded to the nearest tenth)

Therefore, it would take approximately 1.8 hours to cover 1000 miles at 550 mph.