completed two units so far. The first unit took $12$ hours to complete and the next unit took $11$ hours.

Based only on this information, what would be the estimate of the learning percentage in this process? $($Round your answer to $1$ decimal place.$)$

$109\mathrm{.}1\%$

More information is needed to answer this problem

$91\mathrm{.}7\%$

$109\%$

$90\%$