Business earns 125% status miles, so for example LAX-DXB-IST will get you 10,221 status miles.
The additional bonus does not count towards status miles, only redeemable.
I don't see a way to get 15000 one way without creative routings.
EDIT: As pointed out below, LAX-DXB-IST is physically 10,221 miles. Add in the extra 25% for 12,776 status miles.
Last edited by sudobuntu; May 27, 2019 at 12:25 pm
Reason: fixed math