Use a combined cost index and the power$-$sizing cost estimating model to estimate the current cost of a piece of equipment that has

$60\%$

more capacity than a similar piece of equipment that cost AED $300,000$ five years ago. The appropriate power$-$sizing exponent for this type of equipment is

$0\mathrm{.}8$

$,$ and the ratio of the cost indexes $($current to $5$ years ago$)$ is $1\mathrm{.}24.($Note that this is more complex than the previous questions.$)$ Q$8.$ At a learning curve rate of

$80\%$

$,$ estimate the time in minutes required to assemble production unit number $100$ given that the first production unit required

$74\mathrm{.}8$

minutes to assemble.