Two cyclists startat the same time from opposite ends of a c

Two cyclists startat the same time from opposite ends of a cours that is 51 miles long. One cyclist is riding at a rate of 16mph, and the second cyclist is riding at a rate of 18mph. How long after they begin will they meet?

D=RT
51=(16+18)T
51=34T
T=51/34T
1.5 HOURS IS THE TIME IT WILL TAKE THEM TO MEET.