I'm not afraid to admit that my achilles heel is math. I've always struggled with it and I'm sure I always will.
I stumbled across this site awhile ago and it helped explain percentages in a way that actually made sense to me. Of course I have a tipping app but there are times that being able to do it in your head is more convenient. Maybe it will help you too - check it out.
(This could be the topic of another post but does anyone else get the feeling that everyone is watching you while checking out at the hair salon? The receptionists, other stylists waiting for clients, and your stylist seem to gather around the counter and get quiet when you walk up to pay. I get it that your stylist wants to be there to help reschedule and see you out, etc. but I need some space to compute tips people!)
Have a great Tuesday everyone!