$30.76
Find 7% of $25 = (25/100) x 7 = 1.75, then add it to $25 because it's applied tax.
25 + 1.75 = $26.75
15% = split into 10 and 5 percent
10%= (26.75/10) = 2.675
5% = 1.3375, make sure you add this all in your working out.
2.675 + 1.3375 = 4.0125
4.0125 + 26.75 = 30.7625 then round it to two decimal places because it's money :)
