Ade’s age is 3/5 of Bradford’s age. In 6 years' time, the ratio of Ade’s age to Bradford’s age will become 3:4. Find Bradford’s present age.
Bradford's current age --- x
Ade's current age ---- 3x/5
in 6 yrs:
Bradford ---- x + 6
Ade ------- 3x/5 + 6
(3x/5 + 6)/(x + 6) = 3/4
12x/5 + 24 = 3x + 18
12x/5 - 3x = -6
12x - 15x = - 30
-3x = -30
x = 10
Bradfort is now 10 years old.