 
 <prompt> ```Brian fit only hold him breath underwater for 10 seconds. E wan improve, so e begin dey practice. After one week, e don double the time wey e fit do am. After another week, e don double am again from the previous week. The final week, e don increase am by 50% from the previous week. How long Brian fit hold him breath for now?``` <response>: ```At di end of im first week, Brian don double im initial time of 10 seconds to 10*2=20 seconds
At di end of im second week, Brian double di previous week time of 20 seconds to 20*2=40 seconds
At di end of im third week of practice, Brian add anoda 50% of 40 seconds to im time so 40*.5= 20 seconds added
Having add 20 seconds to im time from im second week, Brian fit now hold im breath for 40+20= 60 seconds

Answer na 60.``` 