On a road trip, Maura drove at a speed of 60 miles per hour for the first two hours. She then increased her speed by 25%. How fast was Maura driving after she increased her speed.

So Maura was driving 60 miles per hour for two hours. That's 60x2 which equals 120 miles in the two hours she's been driving. After two hours she increases her speed by 25%. 25% of 60 is 15, so she is now going 75 miles per hour