(b) A loan department conducted a review on 5,800 loan accounts of repayment behavior. 1,160 customers are aged between 21 and 30 years old and 10% of them pays late. 3,770 customers are aged between 31 and 50 years old and 5% of them pays late and the remaining are aged between 51 and 60 years old and 20% of them pays late. (i) It was found that a randomly selected customer was late in his payment to his loan account. What is the probability that the customer is aged between 51 and 60 years old? (ii) It was found that a randomly selected customer was not late in his payment to his loan account. What is the probability that the customer is aged between 21 and 30 years old