The initial capital per worker is $30,000. The capital per worker rises to $60,000. The change in capital per worker is $30,000 (60,000 – 30,000).The change in output per worker is $45,000.The productivity growth attributed to growth in total factor productivity is as follows:Growth Rate=(Change in Input)/(Change in Output) x 100=30,000/45,000 x 100=66.67%Answer is 66.67%