L0.8 Calculate the marginal rate of technical sUbstitution for the Cobb-Douglas production function Q = 20Ko'4 when K = 400 units and L = 500 units. Hence estimate the increase in capital required to maintain the current level of output when labour decreases by 2.5 units. +@. MRTS = Cl (Round your answer to three decimal places as needed.) If labour decreases by 2.5 units then the increase in capital required to maintain current output is D units. (Round your answer to two decimal places as needed.)