Answer:
Bob drove 134.5 miles of the road trip he took with Cheryl.
Explanation:
Distance of the road trip Bob and Cheryl are taking = 188.3 miles
Distance Bob drove to travel on the road trip = Five sevenths of the total distance
Number of miles Bob drove = Distance of the road trip Bob and Cheryl are taking * Distance Bob drove to travel on the road trip
Number of miles Bob drove = 188.3 * Five sevenths of the total distance
Number of miles Bob drove = 188.3 * 5/7
Number of miles Bob drove = 941.5 / 7
Number of miles Bob drove = 134.5 miles
Bob drove 134.5 miles of the road trip he took with Cheryl.