Navigate to new page depending on radio button and drop down selection


I've got a radio button with two options (60 Mins & 90 Mins) and then a drop down box underneath this saying "Chose a Location" and 3 different location options.

Depending on the combination of 60 Mins or 90 Mins and Location I want a button to navigate to the relevant page. There are a number of different pages it can go too.

I have the code working if it was just radio buttons and another set of code which works with just the drop down box but mixing the two together is proving tricky.

Any help much appreciated if someone has done something similar

Many Thanks