If he finished the race, it would've taken 5 minutes because 2.5 x 2 = <<2.5*2=5>>5
Their total time would've been 8 minutes because 3 + 5 = <<3+5=8>>8
The average would've been 4 minutes because 8 / 2 = <<8/2=4>>4
The average time in seconds would've been 240 because 4 x 60 = <<4*60=240>>240
#### 240