A roadway is determined to have the following daily traffic for each direction: 2,000 passenger cars with two 2-kip single axle, 200 passes of single-unit trucks with one 10-kip single axle and one 22-kip tandem axle, and 100 passes of tractor semi-trailer trucks with one 12-kip single axle, one 18-kip tandem axle and one 50-kip triple axle. The soil resilient modulus of the subgrade is 3000 lb/in2 and the roadway pavement is designed for an overall standard deviation of 0.4, a reliability of 99% and the initial PSI is 4.5 and the TSI is 2.5. One newly constructed section of this roadway is a rigid pavement designed with a 9-inch slab with a modulus of subgrade reaction of 100 lb/in3 , a modulus of rupture of 700 lb/in2 , a modulus of elasticity of 4.0 million lb/in2 , and a joint transfer coefficient of 3.0. Another newly constructed section of the same roadway is a flexible pavement with a 5-inch hot-mix asphalt (HMA) surface, 10-inch dense-graded crushed stone base and a 9-inch crushed stone subbase. If the roadway has four lanes in each direction and is conservatively designed, which of the pavement sections will last longer and by how many years (all drainage coefficients are 1.0)