This is a problem in conditional probability where the terms are not given straight out.
Event A: Yankees win
P(A)=.45
Event not A=Yankees lose
P(not A)=.55
Event B: Yanks score 5 or more runs
P(B)=.57
Event not B: yanks score 4 or less run
P(not B)=.43
Also the P(not B AND not A)=.31
Also the What is wanted is conditional probability of not B given not A.
P(not B|not A) = P(not B AND not A)/P(not A) = .31/.55
You do the arithmetic.