24. (1) In preparing or revising a record-of-rights under this Chapter, the Revenue-officer shall, subject to the provisions of sub-sections (2), (3) and (4), presume the rent, payable in respect of any land held by a raiyat or an under-raiyat in the area to which such record relates at the time of preparation or revision of such record, to be fair and equitable. (2) Where the rent so payable in respect of any such land by a raiyat is in the opinion of the Revenue-officer unfair or inequitable, he may reduce such rent to what is considered by him as fair and equitable, having regard to the rates of rent generally paid by the occupancy raiyats for lands of a similar description and with similar advantages in the same village or in the neighbouring villages. (3) Where the rent payable for any land by an under-raiyat is, in the opinion of the Revenue-officer, unfair or inequitable, he may reduce such rent to an amount not exceeding the fair and equitable rent payable by an occupancy raiyat for lands of a similar description and with similar advantages in the same village or in the neighbouring villages, increased by fifty per centum. (4) In any raiyat or under-raiyat pays in respect of any land referred to in sub-section (1), rent either in kind or on the estimated value of a portion of the crop or at rates varying with the crop or in more than one of these ways, the Revenue-officer shall commute such rent to a fair and equitable money-rent at an amount not exceeding one-tenth of the total value of the annual gross produce of such land obtained by multiplying the normal annual yield of that land, determined in the manner prescribed, by the average price of each kind of produce prevailing in the preceding twenty years, excluding the years in which such prices were abnormal: Provided that the Revenue-officer shall, at the time of commuting such rent to a fair equitable money-rent allow for the superior landlord of such raiyat or under-raiyat a margin of profit of not less than twenty-five per centum and not more than fifty per centum of the rents payable by the superior landlord of such raiyat or under-raiyat when such superior landlord pays rents either in kind or on the estimated value of a portion of the crop or at rates varying with the crop or in more than one of these ways.