XI. The contract of attorney's fees entered into by Atty .Quintos and his client, Susan, stipulates that if a judgment is rendered in her favor, he gets 60% of the property recovered as contingent fee. In turn, he will assume payment of all expenses of the litigation. Is the agreement valid? 2.5% May Atty .Quintos and Susan increase the amount of the contingent fee to 80%? 2.5%