8 . The lower Court, after taking into consideration the oral and documentary evidence, on issue No.6 held that the suit of the plaintiff is maintainable, but answered issue No.4 in favour of the plaintiff. While answering issue Nos.1, 2 and 3, it was held that once the defendant bank agreed to pay rent @ Rs.9/- per square feet per month by its letter dated 22.03.1999 and the same was accepted by the plaintiff by letter dated 30.03.1999–Ex.A.11, and as the defendant bank paid rent @ Rs.14,962.50 ps per month from 16.06.1996 to 16.06.1999, it has to pay the difference of rent. Accepting Ex.A.10, under which the Manager of the first defendant Bank agreed to enhance the rent @ 15% after three years i.e., from 16.06.1999, the