Solve the Problem $70 \%$ Of the Workers at City Bank Are Female

Multiple Choice

Solve the problem. Express the answer as a percentage.
-37\% of the workers at Motor Works are female, while $70 \%$ of the workers at City Bank are female. If one of these companies is selected at random (assume a 50-50 chance for each) , and then a worker is selected at random, what is the probability that the worker will be female?

A) $70 \%$
B) $53.5 \%$
C) $37 \%$
D) $33 \%$