The sum of two numbers is 45 and their difference is 5

Determine whether the statement is true or false

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work

Lauren has five shells she found on the beach seashells represent one-third of the shells her whole collection how many shells does lauren have in her whole collection