[iii] The 1st plaintiff was born on 30.05.1969 and the 2nd plaintiff was born on 08.05.1974 and they became entitled to 1/3 rd share each in the ‘A’ schedule property. When the plaintiffs were minors, their father along with his mother Alamelu Ammal sold the ‘A’ schedule building site and another site belonging to Alamelu Ammal in favour of defendants by Sale Deed under Ex.A.4, dated 19.07.1974. In the Sale Deed, the sale price was mentioned as Rs.45,000/-, out of which, a sum of Rs.25,000/- was received by the Vendors to discharge the prior mortgage liability of Rs.25,000/- due to one Sri.V.Krishnan and for carrying out repairs to the taxi owned by the father of the plaintiffs. The father of the plaintiffs has received an advance amount of Rs.5,000/-. Regarding the balance payment of the price, a simple mortgage was executed on the same date by the defendants under Ex.A.5). The Mortgage Deed has been executed in favour of the plaintiffs represented by their father and natural guardian. At that time, the 1st plaintiff was aged about 5 years and the 2nd plaintiff was aged about 3 years. Under the said Mortgage Deed, the defendants have mortgaged the ‘A’ Schedule property as well as the ‘B’ schedule property. Further, it has been agreed that the defendants/mortgagors are able to get the sum of Rs.15,000/- and the same would be invested by the mortgagors in a bank to the best return and half the amount