Browse · harp Print → smc prealgebra senior Problem A positive number x has the property that x% of x is 4. What is x? (A) 2 (B) 4 (C) 10 (D) 20 Solution — click to reveal Since x% means 0.01x, the statement "x% of x is 4" can be rewritten as "0.01x⋅x=4": 0.01x⋅x=4⇒x2=400⇒x=20. Final answer D ← Previous problem Next problem →