points$).85$ perceat is believed to be the learning rate to produce a acw product, $S$ uppose that the time to produce the ${20}^H$ unit is $8$ hours and is minutes

$($a$)(10$ pts$)$ What is the time to produce the fint unit?

$($A$)15\mathrm{.}05$ hours

$($B$)15\mathrm{.}89$ hours

$($C$)1665$ bours

$($D$)17\mathrm{.}45$ bours

$($b$)(10pts)$ What is the time to produce the ${50}^m$ unit?

$($A$)$

$5\mathrm{.}45$ hours

$($B$)6,65$ hours

$($C$)7\mathrm{.}80$ hours

$($D$)8\mathrm{.}95$ hours