<span>Wanda started walking along a path 27 seconds before Dave. Wanda walked at a constant rate of 3 feet per second. Dave walked along the same path at a constant rate of 4.5 feet per second. How long after Dave starts walking will he catch up with Wanda ? *** let x=travel time of Dave x+27=travel time of Wanda speed*travel time=distance (same for both Wanda and dave)
.. 4.5x=3(x+27) 4.5x=3x+81 1.5x=81 x=54 How long after Dave starts walking will he catch up with Wanda ? 54 sec</span>
A, C, and D can be a possibility but they are not exactly at the middle. B is the only one that shows a slightly triangular shape, which you can see the middle that shows the best measure of the center.
