1.0p Challenge: Lunch box pickup Avacationer gets into his outboard motorboat and leaves a dock on a river bank for a day of fishing. Just as he turns upstream, he hears a splash but pays no attention and continues cruising at normal speed. Unfortunately, only 50 minutes later does he realize that his (fortunately watertight) lunchbox is missing. He then turns downstream, with the motor still set at cruising speed. Luckily, he sights his lunchbox floating down the river and retrieves it at a point 1.6 km downstream of the dock. 10 How long afterturning around does he pick up his lunch? Give your answer in minutes. Answer Show feed back . .n