Question

What is 85% of 120? A:102 B:65 C:141 D:47

Answer 1

The answer is A 102
120*0.85= 102

Answer 2

Let the variable x represent the answer. 

85% $= 0.85 = 85 / 100$

$120/x=100/85$

$(120/x)*x=(100/85)*x$  

      - we multiply both sides of the equation by x

$120=1.17647058824*x$ 

     - we divide both sides of the equation by (1.17647058824) to get x

$120/1.17647058824=x$

$x=102$