If a 16-foot silo casts a 12-foot shadow, what is the measure from the tip of the shadow to the top of the silo? 20 feet 400 feet 28 feet 784 feet

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