A guy was asked to specify his age in years. He said, “Take my age 8 years hence, multiply it by eight and subtract eight times of my age 8 years ago and get the half of the result and you will know my age.” What was the age of that guy? Choose the correct answer:
A) 18
B) 55
C) 63
D) 64
E) 70
Current age of the guy = A years.   Then, 8 (A + 8) – 8 (A – 8) = A   (8A + 64) – (8A – 64) = A   A = 128/2= 
<gadget id="calculator">128/2</gadget>
<output>64</output>
64   64
<result>D</result>
A guy was asked to specify his age in years. He said, “Take my age 8 years hence, multiply it by eight and subtract eight times of my age 8 years ago and get the half of the result and you will know my age.” What was the age of that guy?