Five years back, a father was 36 years older than his son. At present the father is 5 times as old as the son. How old will the son be three years from now?	Choose the correct choice from the following: A) 15 years B) 14 years C) 13 years D) 12 years E) 11 years
Using linear equations to convert the word problem:   ** F = fathers current ageS = sons current age   #1 Five years back, a father was 36 years older than his son: F-5 = 30 + (S - 5)   #2 At present the father is 5 times as old as the son: F = 5*S   How old will the son be three years from now?: S + 3 = ?   With two variables and two linear equations we are able to solve the problem:   (S*5) - 5 = 36 +S -5   4S=36   S = 9   S + 3 = 9 + 3= 
<gadget id="calculator">9 + 3</gadget>
<output>12</output>
12   Answer: 12 years
<result>D</result>
Five years back, a father was 36 years older than his son. At present the father is 5 times as old as the son. How old will the son be three years from now?