9. Section 24A of the Principal Act is amended—
(a) by omitting from paragraph (3) (a) all the words after “being an amount” and substituting “determined in accordance with subsection (3A)”;
(b) by inserting after subsection (3) the following subsection:
“(3A) Subsections 13 (2), (3) and (4) apply to impose rates on a unit that is part of a parcel of land subdivided into units and common property as if—
(a) a reference to a parcel of land were a reference to such a unit; and
(b) a reference to the average unimproved value in relation to that unit were a reference to the value determined in accordance with the following formula:
where—
UE is the unit entitlement of the particular unit;
TUE is the unit entitlement of all the units in the units plan;
AUV is the average unimproved value of the parcel of land.”;
and
(c) by omitting from paragraph (4) (a) “, 13”.