5. Suppose that we designed a new floating point unit that accelerates the floating point instructions by a factor of 5. We are now looking for a benchmark to show off the new floating-point unit and we want the overall benchmark to show a speedup of 3. One benchmark we are considering runs for 100 seconds with the old floating-point hardware. How much of the execution time would floating-point instructions have to account for in this program in order to yield our desired speedup on this benchmark? [20%]