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.
(1+(8+78+81+76+57+30+40)/100)*(1+0.08+x/100)=(1+(8+78+81+76+57+18+30+40)/100)*(1+x/100)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random