Question 1104387
he drove 4422 miles? That's a lot of miles!
Distance:
5 hours at speed x = 5x
2 hours at speed x-20 = 4422-2(x-20)
5x = 4422-2x-40
7x = 4382

distance at x-20: 4422-5x
5x+2(x-20) = 4422
5x+2x-40 = 4442
7x = 4382
x = 626 In order to drive 4422 at 5x + 2(x-20), he would have to drive the first 5 hours at 626 miles per hour. Is he driving a jet plane?