Answer: 56 years
Step-by-step explanation:
Let Adam's age be [tex]x[/tex] , since the father is 3 times as old as him , then the father will be [tex]3x[/tex].
Two years ago
Adam = [tex]x - 2[/tex]
Father = [tex]3x - 2[/tex]
since Adam was 15 years old 2 years ago , this means that
[tex]x-2=15[/tex]
add 2 to both sides
[tex]x = 17[/tex]
Therefore , Adam is presently 17 years old , then the father will be 3(17) years , which means that the father is presently 51 years old.
In 5 years time , the father will be 51 + 5 years old. That is , the father will be 56 years old in 5 years time