Question 632723
Let s be the speed in miles per hour that Ed and Ann used. Let t be the time in hours that Ann traveled. For Ann we have st=6 so s=6/t. For Ed s(t+2)=24 so (6/t)(t+2)=24. Multiply both sides by t and get 6(t+2)=24t.     6t+12=24t.   12=18t.  t=12/18. t=2/3 of an hour.  t=40 minutes