G The first common step, A⟶B , is partly inhibited by both final products, Y and Z, which act independently of each other. Suppose that a high level of Y alone decreased the rate of the A⟶B step from 100 s−1 to 60 s−1 and that a high level of Z alone decreased the rate from 100 s−1 to 40 s−1. What would be the rate of the A⟶B step in the presence of high levels of both Y and Z?