Question

I NEED HELP PLEASE ASAP!!!!!!!!!!

Answer 1

$P(A|B)=\dfrac{P(A\cap B)}{P(B)}\\\\ P(A|B)=\dfrac{\dfrac{3}{4}}{\dfrac{4}{5}}\\\\ P(A|B)=\dfrac{3}{4}\cdot\dfrac{5}{4}\\\\ P(A|B)=\dfrac{15}{16}$