Question 1006179
Call the time he traveled at 40 mph, t.
Then the time he traveled at 35 mph would be 7-t.
We then write
40t + 35(7-t) = 265
40t + 245 - 35t = 265
5t + 245 = 265
5t = 20
t = 4 hours at 40 mph
7-t = 3 hours at 35 mph