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.
9.3*t+150*t + 8*80 + 8*t=3.1*(200-t)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random