Scenario:

Calculate the number of hours to do a task - each task will take
different amount of time. Want to calculate the finish time of the
task based on the start time.

Example:

Task 1: Takes 7.8 hours and starts at 7 a.m. - what is the finish
time?
Task 2: Takes 8.5 hours and starts at 2 p.m. what is the finish time?

Thx!!