BLE PO 16.67 For one Chemistry test, John had to answer 36 questions. Of these questions, John answered 50% of them correctly. How many questions did John correctly answer on his test​

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.