At punkton station the probability that the 8:00am train arrives on time is 0.8. The probability that the 8:30 am arrives on time is 0.9 if the 8:00 train was on time and 0.6 if the 8:00am train was l

At punkton station the probability that the 8:00am train arrives on time is 0.8. The probability that the 8:30 am arrives on time is 0.9 if the 8:00 train was on time and 0.6 if the 8:00am train was late find the probability that’s on one particular morning. 

i) The 8:00am train is late 

ii) both trains are late 

iii) both trains are on time 

iv) the 8:00 am train is on time but the 8.30 train is late