Is 50 to 32 and 10 to 8 proportional

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.