how to solve diz type of questions
Let x stand for the "mystery number" you are trying to find.
75% of x plus 75 = x
0.75x + 75 = x
Bring the variable terms to the left side of the equation by subtracting x from both sides.
-0.25x + 75 = 0
Bring the constant terms to the right side by subtracting 75 from both sides.
-0.25x = -75
Divide both sides by -0.25
x = 300