Question 803724
after x years you will be 1/2 dad's age

your age after x years

13+x

Dad's age after x years
41+x

13+x= 1/2(41+x)

2(13+x)=41+x

26+2x=41+x

2x-x=41-26
x=15

you will be 28 he will be 56