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(1) Where any person suffers damage as the result partly of his own fault and partly of the fault of any other person or persons, a claim in respect of that damage shall not be defeated by reason of the fault of the person suffering the damage, but the damages recoverable in respect thereof shall be reduced to such extent as the court thinks just and equitable having regard to the claimant's share in the responsibility for the damage . . .

(2) . . . the court shall find and record the total damages which would have been recoverable if the claimant had not been at fault . . .

4:-- [Fault is . . .] negligence, breach of statutory duty or other act or omission which gives rise to a liability in tort or would, apart from this Act, give rise to a defence of contributory negligence;