Head Spinning

So I went to a spin class the other day. The instructor said she wanted us to ride at 75%. After a while she said to give her a 5% increase…

I’m thinking, ok, does she want me to go 75% + another 5% = 80%. OR does she want me to increase by 5% ((75x.05)+75) = 78.75%.

Yeah, I know, that’s messed up. That’s how my head works…