Question 992137
Let the age of Jonathan be x and age of Jean be y.
x-y=15-----(1)
Six years ago,
x-6=6(y-6)
x-6=6y-36=>x-6y=-36=6=>x-6y=-30-----(2)
solving (1)&(2)
5y=45=>y=45/5=9=>y=9yrs
x=15=9=24=>x=24yrs
Jonathan present age=24years