The structural engineering design section within the engineering department of a regional electrical utility corporation has developed several standard designs for a group of similar transmission line towers. The detailed design for each tower is based on one of the standard designs. A transmission line project involving 50towers has been approved. The estimated number of engineering hours needed to accomplish the 8thand 50thtower are 108 hours and 94.3 hours respectively. Determine the learning curve percentageandestimate of thenumber of engineering hours needed to design the 10thtowerin the project