Making the round trip to school means driving from the house to school and then back, for a total of 2.5+2.5 = <<2.5+2.5=5>>5 miles
He makes this trip twice in one day for a total of 2*5 = <<2*5=10>>10 miles
He does this 4 times in a week for a total of 4*10 = <<4*10=40>>40 miles.
The round trip (once a week) to the market is 2+2 = <<2+2=4>>4 miles.
His total mileage for a typical week = 40+4 = <<40+4=44>>44 miles
#### 44