When there is a 6 percent increase in the CPI, then there will most likely be a more than 6 percent rise in the cost of living because consumers substitute away from goods whose relative prices rise towards other goods. a 6 percent rise in the cost of living. a less than 6 percent rise in the cost of living because consumers substitute away from goods whose relative prices rise towards other goods. a more than 6 percent rise in the cost of living because of the introduction of new goods. a less than 6 percent rise in the cost of living because of falling quality of goods over time