(1) If:
(a) more than one * adult is covered under the same * hospital cover; and
(b) the amount of premiums payable for the cover in respect of at least one of those adults is increased under this Part;
the amount of the premiums payable for the cover in respect of all of the adults is increased.
(2) The amount of the increase in the premiums payable for the cover is worked out by:
(a) dividing the * base rate for the cover by the number of * adults it covers; and
(b) using that rate to work out for each adult what the amount of the increase for that adult (if any) would be; and
(c) adding together the results of paragraph (b).