Will give brainlist or whatever. Meredith has $5.10 in quarters and dimes. She has 24 coins in all. How many quarters and how many dimes does she have?

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120