Hi,

I've been having problems ith this question. Been trying to use ideas of area and similarity but nothing seems to work. One idea I have is to make the like go from F though the points E and F but will this make the question too specific?

Let triangle ABC have E on AC, D on AB an point F on the extended line BC. Given that AE=2EC and AD=3DB and CB=5, find the length of BF

Thanks!