Question

Two planes, which are 2320 miles apart, fly toward each other. Their speeds differ by 80 mph. If they pass each other in 4 hours, what isthe speed of each?Step 2 of 2: Solve the equation found in Step 1. (2320 = 8x + 320)

Answer 1

Solving the equation found in step 1 for x, we have:

$\begin{gathered} 2320=8x+320 \\ 8x=2320-320 \\ 8x=2000 \\ x=\frac{2000}{8} \\ x=250\text{ mph} \end{gathered}$

Therefore the speed of one plane is 250 mph and the speed of the second plane is 330 mph.