Take 15%+20%=35% then 100%-35%=65% so 14.96=65% ; 14.96/65x100=23.015 so the original price is $23.02 ( to check you can take 23.02/100x35=8.057 and then take 23.02-8.057 =14.963 which is 14.96)
This number is rational because there is a repeating pattern. Following the decimal, there is one 0 then a 2. This process repeats by adding a 0 each time the number 2 is passed.
