When this 3-digit number is rounded to the nearest ten or hundred, the numbers round up. all of the digits in this number are the same. the sum of the digits is 15. what is the number

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