Can someone please show me the steps needed to achieve the answers to this question?
Leonard need to get to Penny's house from his apartment- her house is just across a 4km wide river and is 3km upstream from Leonard's apartment with a current of 1km/h toward the east. Leonard can do one of two things: 1) he can swim on a path straight to Penny's house or 2) he can swim straight across the river and run the rest of the way on land. His swimming speed is 4km/h and his running speed is 6km/h. Which method will get Leonard to Penny's the fastest?
any help is much appreciated. =)