Molly'sbillforbrunchatarestaurantwas$58.20.Shelefta15%tip.Whatwastheamountofthetip?

To calculate the tip, first we need to find 15% of the total bill:

15% of $58.20 = 0.15 * 58.20 = $8.73

Therefore, the amount of the tip Molly left was $8.73.