Question

Two planes are 1,700 miles apart, and their speeds differ by 50 mph. They travel toward each other and meet in 2 hours. Find the speed of the slower plane.

Answer 1

r t = d
Let r be the speed of the first plane. Solve the following for r:
{r* 2 + (r - 50)*2 = 1700}
r = 450 mph, 450-50 = 400 mph

Answer 2

a=x
b=x+50
2a+2b=1700
2a+2(a+50)=1700
4a+100=1700
a=400

Answer 3

Thank you thank you!

Answer 4

Wow. Isn't that a happy face?