15 4/5% of 50

A ...79 B. 79

C. 790 D. 7.9

15 4/5 is 15.8. The word "of" means to multiply, and of course we have to change that percent into a decimal to use it in an equation ...158 * 50 = x is our equation. Doing the multiplication on the left will give us our x. x = 7.9, D from above.