Probability of team winning the next match

[manishofficial4378]

Answer is 0.55
How is this solved?

[vidishas99]

P(R) = 0.4
P(R \cap S) = 0.7
P(R \cup S) = 0.25

P(R \cup S) = P(R) + P(S) - P(R \cap S)
0.25 = 0.4 + P(S) - 0.7
P(S) = 0.25 + 0.7 - 0.4 = 0.55

[manishofficial4378]

Thanks.