Bill Dukes has $$100,000$ invested in a $2-$stock portfolio. $$62,500$ is invested in Stock X and the remainder is invested in Stock Y$.$ X$\text{'}$s beta is $1\mathrm{.}20$ and Y$\text{'}$s beta is $0\mathrm{.}80.$ What is the portfolio's beta? Do not round your intermediate calculations. Round the final answer to $2$ decimal places.

Question $3$ options:

$1\mathrm{.}20$

$0\mathrm{.}90$

$1\mathrm{.}05$

$1\mathrm{.}44$