Two cyclists, $64$ miles apart, start riding toward each other at the same time. One cycles $3$ times as fast as the other. If they meet $2$ hours later, what is the speed $($in $m\frac{i}{h})$ of the faster cyclist?

a$.$ Write an equation$]$using the information as it is given above that can be solved to answer this problem. Use the variable $r$ to represent the speed of the slower cyclist.

b$.$ What is the speed of the faster cyclist?

$m\frac{i}{h}r$