SOLUTION: Two planes start from the same point and fly in opposite directions. The first plane is flying 30mi/h faster than the second plane. In 3.5 h the planes are 875 miles apart. Find th
Algebra ->
Customizable Word Problem Solvers
-> Travel
-> SOLUTION: Two planes start from the same point and fly in opposite directions. The first plane is flying 30mi/h faster than the second plane. In 3.5 h the planes are 875 miles apart. Find th
Log On
Question 1047795: Two planes start from the same point and fly in opposite directions. The first plane is flying 30mi/h faster than the second plane. In 3.5 h the planes are 875 miles apart. Find the rate of the faster plane. Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! rt = D
(r + 30)(3.5hr) + r(3.5hr) = 875m
7r + 210 + 7r = 875*2
14r = 1750 - 210
14r = 1540
r = 110mph, slower
faster 140mph
AND
250(3.5) = 875 CHECKS!
