+197 Tommy and his family are touring Chicago. They want to visit the Willis Tower, hang out at Navy Pier, and shop on Michigan Avenue before their dinner reservations at 3:30 P.M. They plan to spend 1 hour and 15 minutes at the Willis Tower, 2 hours at Navy Pier, and 1 hour and 15 minutes shopping. What is the latest time Tommy's family can start their tour of Chicago and still make it to dinner on time?
+318 Add the times to find the total elapsed time.
1 h + 15 min + 2 h + 1 h 15 min = 4 h 30 min
Now find 4 hours and 30 minutes before 3:30 P.M.
Count back by hours to find 4 hours before 3:30 P.M. This is 11:30 A.M.
Now subtract 30 minutes from 11:30 A.M. This is 11:00 A.M.
Tommy's family should start their tour of Chicago at 11:00 A.M.
+318 Add the times to find the total elapsed time.
1 h + 15 min + 2 h + 1 h 15 min = 4 h 30 min
Now find 4 hours and 30 minutes before 3:30 P.M.
Count back by hours to find 4 hours before 3:30 P.M. This is 11:30 A.M.
Now subtract 30 minutes from 11:30 A.M. This is 11:00 A.M.
Tommy's family should start their tour of Chicago at 11:00 A.M.
