Question

plz guys help me in this que I want the solution right now
11 question

Answer 1

let father's age=x yrs
sum of ages of all children=y yrs

at present, x=y
3y-3x=0 (1)
after 15 yrs
y+45=3/2 (x+15)
2y-3x=-90 +45 =-45 (2)
subtracting eq 2 from eq 1
y=45
so father's present age=45 yrs