The new hourly rate is $6.15. To find this, you have to set up the rate and percent as x/6=2.5/100. You cross multiply. x times 100 equals 100x. 6 times 2.5 equals 15. It would be written as 100x/100=15/100. You divide by 100 to leave x by itself. 15 divided by 100 equals 0.15. So, x equals $0.15 cents. You add 6 and 0.15. Together, they add up to $6.15. Hoped this helps!