Question

after 10 years a will be twice the age of b before 10 years and now if the difference is 9 years between them then what is the age of b after 10

Answer 1

Let age of a be x years

Let age of b be y years

x+10= 2(y-10)

x+10= 2y-20

x= 2y-30

x-y= 9

2y-30-y= 9

y= 39

x= 48

Age of b after 10 years will be 49 years