PLEASE HELP!!! MIDTERM!!

tram left a tip of $9, which is 3/20 of the total cost of the food. Which shows the correct equation and the value of x, the total cost of the food?

○ 3/20x=9; x=$1.35

○ 3/20x=9; x=$60

○ 3/20x=x/9; x=$1.35

○ 3/20x=x/9; x=$60