Martina plans on navigating the Big Richland river for a 24 kilometerround trip (12 km upstream and 12 km back downstream). She wants her trip downstream to be8 kilometers per hour faster than her trip upstream so that it takes 30 minutes less to get back towhere she started. What should Martina’s speed upstream be? Be sure to show and explainyour initial setup. Round your solution to the nearest tenth.