A turtle walks southward along a deserted highway with an av…

A turtle walks southward along a deserted highway with an average velocity of magnitude 8.6 x 10-2 m/s in 3.5 minutes. A truck driver stops and picks up the turtle. The driver takes the turtle to a town to the north with an average speed of 12 m/s in 91.7 s. What is the magnitude of the average velocity of the turtle for the entire journey?