Marguerite is building a box from strips of wood. she needs 78 pieces of wood that are each 29 centimeters long. the wood comes in boards that are 6meters long. how many boards will she need?

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.