Question 4847
Let t = age now of Tyrone
Let d = age now of daughter


t = 2d --eqn1


Second piece of info is (t+6) = 3(d-6) --eqn2


eqn2 becomes t+6 = 3d-18. Sub into it, eqn1, to get 2d+6 = 3d-18.
2d+6 = 3d-18
+6 = d-18
d-18 = 6
d = 24

and from eqn1, t=2x24 --> t=48



jon.