According to the general equation for conditional probability, if p(a^b)=3/4 and p(b)=4/5, what is p(a b)?

0.96

A rule of conditional probability states that

P(A∣B)=P(A∩B)P(B)

So in this case it would be:

P(A∣B)=4556=4⋅65⋅5=2425=0.96

your answer would be 10x - 1