Answer:
26.4 hour
21.12 hours
Step-by-step explanation:
To properly answer this question, we will multiply the estimated time to build the first pool in 33 hours by the percentage of of the contractors estimate.
Thus, we have,
33 x 0.80 = 26.4. This is assumed to be the estimated time to build the second pool.
Now, moving forward to calculate the estimated time to install the fifth pool, we multiply the estimated time for the second pool by percentage of the contractors estimate.
That is:
26.4 X 0.80 = 21.12
Hence, 21.12 is the assumed estimated time required to install the fifth pool.