Question 1 Stonewall receives c250 per year in simple interest from an amount of money he invested in ADB, Barclays and GCB. Suppose ADB pays an interest of 2%, Barclays pays an interest of 4% and GCB pays an interest of 5% per annum and an amount of 350 more was invested in Barclays than the amount invested in ADB and GCB combined. Also, the amount invested in Barclays is 2 times the amount invested in GCB. a) Write down the three linear equations and represent them in the matrix form AX = B. b) Find the amount of money Stonewall invested in ADB, Barclays and GCB using Matrix Inversion Question 2 A manager hires labour and rents capital equipment in a very competitive market. Currently the wage rate is GH2 per hour and capital is rented at GH5 per hour, the unit price of the product is GH0.25 and total cost is 1000. Suppose the firm's production function is as follows: Q = 14K0.520.5 + 10 i. What is the amount of labour and capital the firm should employ in order to maximize output? [Hint: Maximise the product function subject to the cost constraint] ii. What is the maximum profit