Question: Solve the given problems by use of an appropriate sequence or expansion. All numbers are accurate to at least two significant digits.
A pile of dirt and ten holes are in a straight line. It is 20 ft from the dirt pile to the nearest hole, and the holes are 8 ft apart. If a backhoe takes two trips to fill each hole, how far must it travel in filling all the holes if it starts and ends at the dirt pile?