An activity with a measured learning rate of $87\%(\backslash$phi $=0\mathrm{.}87,$ s $=-0\mathrm{.}1610)$ has observed cycle times as shown in the table below. If the activity is interrupted at cycle $5$ and restarted $($at cycle $6)$ several days later with a measured effort as shown, how much effort $($T$)$ was lost due to the interruption?

Cycle

Effort

$($N$)($T$)$

$1$

$48006900$

$1,000$

$2.$ An activity with a total of $20$ cycles has the following field observations and projections. The work was interrupted before cycle $10$ and restarted several days later with new observations, shown $($actual$).$ What is the cost $($time$)$ to the project resulting from the $$unlearning$$ that occurred during the interruption $($cost $=$ total hours from cycle $10$ to $20)?$

Table of observed cycles, times, and projections.

s $=-0\mathrm{.}4132,$ KT $=350$

Cycle $($N$)1$

$5$

$10$

$20$

Effort $($T$)350$ hrs $180135101$

Actual $($T$)350180180146$