_DEF and Z POR are vertical angles. If _DEF is (4(2x - 3)) •and PQR is (6+ 2x), what is the measure of < PQR?​

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists