If the motorcycle speed is X, the emergency repair speed is1.5x.
30/x- 15/60=30/ 1.5x
10/x= 15/60
X=40 motorcycles
1.5x=60 Repair the vehicle
2
Set at least x questions correctly.
10x-(20-x)* 3 & gt; Equal to 70
13X > equals 130.
X> equals 10.