(365 * 1.5 - d) * ((1.5 + 6.5 * (50/75)) * 0.6) = (232.5 * 1.5 - d) * (1.5 + 6.5 * (50/75))

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.