The first day speed of the runner is
and he traveled 40 minutes.
The speed formula:
.
The distance traveled by the runner in 40 minutes is
.
Substitute the values of
in the above equation.

.
The second day speed of the runner is
and he traveled 50 minutes.
The distance traveled by the runner in 40 minutes is
.
Substitute the values of
in the above equation.

.
The total distance traveled by the runner in two days
.
The total distance traveled by the runner in two days
.