Insofar as it is relevant, it provides: "(1) subject to the provisions of sub section (2), 'standard rent ', in relation to any premises means (A) in the case of residential premises (1) where such premises have been let out at any time before the 2nd day of June 1944 (a) if the basic rent of such premises per annum does not exceed six hundred rupees the basic rent; or (b) if the basic rent of such premises per annum exceeds six hundred rupees, the basic rent together with ten per cent of such basic rent; (2) where such premises have been let out at, any time on or after the 2nd day of June 1944 (a) in any case where the rent of such premises has been fixed under the Delhi and Ajmer Merwara Rent Control Act, 1947, or the Delhi and Ajmer Rent Control Act, 1952 (i) if such rent per annum does not exceed twelve hundred rupees, the rent so fixed; or 394 (ii) if such rent per annum exceeds twelve hundred rupees, the rent so fixed together with ten per cent of such rent; (b) in any case, the rent calculated on the basis of seven and one half per cent per annum of the aggregate amount of the reasonable cost of construction and the market price of the land comprised in the premises on the date of the commencement of the construction: Provided that where the rent so calculated exceeds twelve hundred rupees per annum, this clause shall have effect as if for the words "seven and one half per cent", the words "eight and one fourth per cent" has been substituted: Section 7 provides for lawful increase of standard rent in certain cases and for recovery of other charges.