Plant and Machinery

$1.$ An insurance broker purchased on $1$st July $2022,$ computers and printers for his business at a total cost of $$500,000.$ Computers receive an initial allowance of $25\%$ and an annual allowance of $20\%.$ On $30$th June $2024$ the insurance broker sold the computers and printers for $$150,000.$ Calculate the capital allowances for the years $2022$ to $2024.(1$ Mark$)$