2020 Question 3 (Marks:20) Music Ltd, a manufacturer of music instruments, incurred the following costs in the guitar department Month Units Total cost (R) July 190 4 500 August 290 5 500 September 240 5 000 October 240 5 000 November 140 4 000 December 190 4 500 Required: 2.3.1 Calculate the fixed and variable portions of overheads by using the high-low (5) method. 2.3.2 Calculate the fixed and variable portions of overheads by using the least squares (15) method nExy - Exy nEx-(Ex) y - END OF PAPER