8. Where the applicant occupies a dwelling as a home and provides in that dwelling board and lodging accommodation for a charge, an amount in respect of each person for whom the accommodation is provided for the whole or any part of a week, equal to—S
(a)where the aggregate of any payments made in respect of any one week in respect of the board and lodging accommodation provided to such persons does not exceed £20, 100 per cent of the aggregate of the payments; or
(b)where the aggregate of any payments made in respect of any one week exceeds £20, £20 and 50 per cent of the excess of the aggregate of the payments over £20.