Linda drove to her boyfriend's house and found him waxing his car. this job usually takes him 3 hours. she wanted her boyfriend to take her to the show which was starting in 2 hours. she offered to him, but she knew she would need 4 hours to wax the car by herself. she wondered how long both of them would need to wax the car. calculate the number of hours it will take. (round your answer to the nearest tenth.)