Question

PLEASE HELP ME. I NEED TO ANSWER THIS ASAP. I WILL LOVE YOU FOREVER OMG. Okay so the question is - Keith is racing this little sister Pattie and has given her a 15 foot head start. She runs 5 ft/sec and he is chasing at 8ft/sec. For how long can Pattie stay ahead of Keith?

Answer 1

Keith runs (8 - 5) = 3 ft per sec faster than Pattie, so every second he gets 3 ft closer to her. If they do that for (15/3) = 5 seconds, he'll catch up to her.