 
 <prompt> Billy and Margaret dey compete to see who fit swim 10 laps pass. Billy swim im first 5 laps for 2 minutes, swim the next 3 laps for 4 minutes, swim the next lap for 1 minute, then swim im final lap. Margaret finish to swim all her laps for 10 minutes. Billy win the competition by finish im laps 30 seconds before Margaret. In seconds, how long e take Billy to swim im final lap? <response>: ```Margaret finish all her laps for 10 minutes * 60 seconds = 600 seconds.
Billy first 5 laps take 2 minutes * 60 seconds = 120 seconds.
Him next 3 laps take 4 minutes * 60 seconds = 240 seconds.
Him ninth lap take 1 minute * 60 seconds = 60 seconds.
So him first 9 laps take 120 + 240 + 60 = 420 seconds.
Billy finish to swim him laps before Margaret so all him laps take total of 600 – 30 = 570 seconds.
This mean say e take 570 seconds for total swimming time – 420 seconds for time wey him spend to swim the first 9 laps = 150 seconds for Billy to swim him final lap.

Answer na 150.``` 