Penjelasan dengan langkah-langkah:

First, we need to convert the distance of the half marathon from miles to kilometers using the conversion rate given:

15.3 miles = 15.3 x 1.61 = 24.633 kilometers (rounded to 3 decimal places)

Next, we can calculate the total time it will take the runner to complete the distance using the average pace of 5 minutes and 30 seconds per kilometer:

Time = distance x pace

Time = 24.633 km x (5 min + 30 sec/60 sec)

Time = 24.633 km x (5.5 min)

Time = 135.4815 minutes

To convert minutes to hours and minutes, we can divide by 60 to get the number of hours and then take the remainder to get the number of minutes:

Hours = 135.4815 min / 60 min/hour = 2.258 hours (rounded to 3 decimal places)

Minutes = 0.258 hours x 60 min/hour = 15.48 minutes (rounded to 2 decimal places)

Therefore, it will take the runner approximately 2 hours and 15 minutes (rounded to the nearest minute) to complete the half marathon at an average pace of 5 minutes and 30 seconds per kilometer.