Ireland increases investment in its physical capital by 15%, while at the same time, South Sudan gets a grant and increases investment in physical capital by 15% as well. Which country will experience a greater impact on productivity as a result of this investment? The return on investment in Ireland is much better than South Sudan. As the increase in investment is the same, the impact on productivity will be the same for both countries. Ireland will experience a proportionally greater impact on productivity than South Sudan as it has more capital. South Sudan will experience a proportionally greater impact on productivity than Ireland as it has very little capital to start with