Could someone please answer this with working?
An IT technician must upgrade all the PCs in an office by adding 256 MB of RAM to each machine and replacing the CPUs with a Dual Core processor.
A supplier will provide twelve Dual Core processor chip and 2048 MB of RAM for £1200 or nine Dual Core processor chip and 2560 MB of RAM for £960.
By using Determinant, matrices (inverse matrix) and Graphical methods, find how much does the supplier charges for a single Dual Core processor chip and for a single piece of 256 MB RAM. (P1, P2, P5)