Answer:
We can set up two equations to represent the information given in the problem:
F = 2S (where F is the father's present age and S is the son's present age)
(F - 10) / (S - 10) = 5/2
We can substitute equation 1 into equation 2:
(2S - 10) / (S - 10) = 5/2
We can cross-multiply and simplify to solve for S:
2S - 10 = 5S - 25
3S = 35
S = 35/3
S = 11.67
So the son is currently 11.67 years old. To find the father's age, we can use equation 1:
F = 2S
F = 2 * 11.67
F = 23.33
So the father is currently 23.33 years old.