TATA Motors posted a 14.24% jump in its total sales during August at 49,810 units as compared with 43,600 units the same month in 2008. The homegrown firm's total passenger vehicles sales in the domestic market grew by 11.33% at 17,364 units last month, against 15,597 units in the same month last year. However, its exports in August plummeted by 43.76% at 2,684 units as compared with 4,772 units in the same…