It would cost 48.60 because 59.99*0.25=14.99 then you subtract so 59.99-14.99=45.00 then you multiply the tax 45.00*0.08=3.6 finally you add that 45.00+3.60=48.60
The original price was 78.18 because you’re multiply 67.99*0.15=10.19 since your are finding the original price you have to add 67.99+10.19=78.18.