From November to December of $2015,$ the price per share of BP Oil dropped from $$96\mathrm{.}25$ to $$70\mathrm{.}25.$ Exxon shares also dropped from $$89\mathrm{.}75$ to $$68\mathrm{.}25.$

In November, your rich cousin invested $$57,391\mathrm{.}25$ into a combination of BP and Exxon shares. By December they sold their shares for $$43,136\mathrm{.}75$ losing $$14,254\mathrm{.}5$ from their investment.

How many of each stock did they purchase?

They purchased

Number

BP shares and

Number

Exxon shares.