Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
(0.25*0.85)/(0.75*0.15 + 0.25*0.85)
(0.25*0.85)/(0.75*0.15 + 0.25*0.85)
Natural Language
Math Input
Extended Keyboard
