It’d be 1⁄2 your prediction, if you’re giving them 10 days and want to arrive at 15 after they add their increase.
It’s 1⁄2 of your non-mugging prediction, but it’s 1⁄3 of your stated (with-mugging) prediction. You’re trying to arrange it so that non-mugging prediction + mugging based on with-mugging prediction = with-mugging prediction.
It’s 1⁄2 of your non-mugging prediction, but it’s 1⁄3 of your stated (with-mugging) prediction. You’re trying to arrange it so that non-mugging prediction + mugging based on with-mugging prediction = with-mugging prediction.