Complete the Table Using the Formula $r \cdot t = d$

Essay

Complete the table using the formula $r \cdot t = d$ .
$\begin{array}{|l|l|l|l|}\hline & \text { rate } & \text { time } & \text { distance } \\\hline \text { Running } &x& &15\\\hline \text { Bicycling } &x+20&&15\\\hline \end{array}$