(1) Where it is reasonably open to find that—
(a) at the time when a previous representation was made, the person who made it had authority to make statements on behalf of a party in relation to the matter with respect to which the representation was made; or
(b) at the time when a previous representation was made, the person who made it—
(i) was an employee of a party, or
(ii) had authority otherwise to act for a party, and the representation related to a matter within the scope of the person's employment or authority; or
(c) a previous representation was made by a person in furtherance of a common purpose, whether lawful or not, that the person had with a party, or with a party and one or more other persons,
the previous representation shall, for the purpose only of determining whether it is to be taken to be an admission, be taken to have been made by the party.
(2) For the purposes of the application of subsection (1), the hearsay rule does not prevent the admission or use of a previous representation made by a person that tends to prove—
(a) that the person—
(ii) had authority to act for a party;
(b) the scope of the person's employment or authority; or
(c) the existence at any time of a common purpose.