One very hot and humid summer day Tom Scott and Ron came to

One very hot and humid summer day Tom, Scott and Ron came to visit Jared in Seward. Since cyclists are always hungry they asked Dr Sylwester for a recommendation for a place they could ride to and cat dinner after their afternoon nap. It so happens that the Registrar had just remarked to Dr Sylwester about his favorite hamburger place, a barand-grill in Garrison, Nfc, about 40 km away. When Jared called to make a reservation the gruff grill guy said (after Jared explained what a dinner reservation was) that the hamburgers would be ready at 6pm. not a minute earlier and not a minute later, the same time the doors were unlocked. What is the latest time that they need to start waking from their naps and start leaving Seward for Garrison? There are a few details to keep in mind as you determine when they have to start their trip. No one brought any hikes. Jared\'s own bike has two flat tires but Dr Sylwester kindly lent them two folding bikes (Bike Friday Pocket Rockets). Note that only two cyclists can ride ai a tune bin one can fold one of the bikes and carry it upsi n the rack on the back of the other bike. Note also that Tom can ride at a steady 4(1 kph no matter what. Scott is only slightly slower at 36 kph and Ron and Jared can ride at 24 and 16 kph. respectively.

Solution

By 4:55 PM they have to start. As Tom rides for 40kph it takes one hour for him and for scott it takes 1:05 miniutes. so at a max if they could start by 4:55 PM they could reach.

If Jred and Ron rides they have to start by 3:30Pm as it tekes 2 and half hours for Ron,