When dealing with percentages like this it’s quite simple. Move the decimal point of the percentage two places. (150->1.50) then take that number (1.5) and multiply it by the 5$. Then boom! You have your answer. Hope this helped :)
Count back 25 minutes from 4:15 and you’ll get 3:50. The numbers on the clock are 5 minutes apart. It should be easy to solve just by using a standard clock