Eleven people on a war games weekend come to a railroad trestle. It is midnight and there is no moon. Crossing is very dangerous because the ties are slippery and unevenly spaced, but they need to get over in the shortest possible time. The people are of widely differing ages and fitness. The time it will take the people to cross is 5, 10, 15, 20, 30, 30, 35, 45, 50, 55 and 65 minutes, respectively. Whenever 2 people cross together, they cross in the time of the slower person. Each person knows everyone's time.
They have just 2 small flashlights that each cast only enough light to allow two people to cross safely. Once they begin crossing, both flashlights are in constant motion, being carried across and back on the bridge. They are never held waiting for someone to arrive. The flashlights can be handed off at either end, but not part way. Crossers never turn around or stop on the bridge. The last sets of crossers all finish together. Also, the two people who need 30 minutes hate each other and will not cross together.
How long does it take for everyone to cross (A) if one person can carry both flashlights, (B) if one person cannot carry both flashlights? How is this accomplished?
Please submit all answers in the form of a 5-column table or schedule. The left column should be the time, starting at T=0, the second column the people waiting to cross, the third column the people crossing the bridge, the fourth column the people returning, and the fifth column the people who have already crossed.
Hello! As a writer, I understand the difficulties that students face in today’s demanding academic environment. With numerous assignments and tight deadlines, many students turn to paper writing services for help. However, choosing the right service that suits your individual needs can be a daunting task among the many options. Students usually look for quality, reliability, and affordability, but choosing among services can be a daunting task. The Best Paper Writing Service
https://linktr.ee/bestpaperwritingservice should not only provide well-reasoned papers, but also offer timely support and understandable prices. By choosing the best paper writing service, students can ease their academic burden and achieve their goals without sacrificing standards. Taking the time to research and making an informed decision is essential for academic success and peace of mind.
Best Paper Writing Service
