130R47. The taxpayer may deduct under paragraph a of section 130R46 an amount not exceeding the aggregate of(a) 50% of the lesser of the capital cost to the taxpayer of the designated property of the class acquired by the taxpayer during the year and the undepreciated capital cost to the taxpayer of the property of that class at the end of the year, computed before any deduction under section 130R46 for the year, and as if no amount had been included in respect of property acquired after 12 November 1981 that was not designated property of the class;
(b) the amount by which the undepreciated capital cost referred to in paragraph a exceeds the capital cost of the designated property referred to in paragraph a; and
(c) the lesser of 25% of the capital cost to the taxpayer of all property of the class that is not designated property and acquired by the taxpayer during the year and the undepreciated capital cost to the taxpayer of the property of the class at the end of the year, before any deduction under section 130R46 for the year.