The probability that Kate goes to the cinema is 0.2.If Kate does not go Claire goes. If Kate goes to the cinema the probability that she is late home is 0.3. If Clair goes to the cinema the probability that she is late home is 0.6.

Calculate the probability that.....
The person who goes to the cinema arrived home late.
My answer:
0.2*0.3=0.06
0.8*0.6=0.48
0.06+0.48=0.54

Right!