A180 ft long board is cut into 3 pieces. these second pieces of board is twice as long as the first. the third piece of board is six times as long as the first. what is the length of the first of the board? a) 20 ft b) 40 ft c) 60 ft d) 120 ft

Renee hiked for 6 3 /4 miles. after resting, renee hiked back along the same route for 5 1 /4 miles. how many more miles does renee need to hike to return to the place where she started? represent your answer as a simplified mixed number, if necessary.