Two events occur at different x-coordinates but at the same time as measured by Kamala. Doreen, who is moving at 0.800c relative to Kamala in the +x-direction, measures that one event takes place 0.600 s before the other. What is the distance between the two events as measured by (a) Kamala and (b) Doreen?

Two events occur at different x-coordinates but at the same time as measured by Kamala. Doreen, who is moving at 0.800c relative to Kamala in the +x-direction, measures that one event takes place 0.600 s before the other. What is the distance between the two events as measured by (a) Kamala and (b) Doreen?