how to answer part F you must look at E to answer F

Consider that floating point division accounts for 90s out of total 120s of overall operational time. If we intend to speed up the overall operation by a factor of 2 (means 2 ) then how much improvement in the floating-point division needs to be achieved? [Points: 5] 90/120=.75 or 75% (this is the time of the overall operation that goes in the floating point) Speeding up by 2 means half of 120 which is 60s .7560=45(75% of new overall computation time) Therefore improve floating point division by 45 's 90s45s=45s This mean we have to cut the floating point division time to half. So we need to achieve 50% improvement in the floating point division operation. f. In Q1.e if we intend to achieve overall operational speed up by a factor of 4 by improving the floating point division algorithm, will this be an achievable goal? Show your work. [Points: 5]