Question

how do I express the formula D equals RT in terms of time use a formula to find the time when the distance is 40 and the rate is 8

Answer 1

$\begin{gathered} D=RT \\ \Rightarrow\text{ RT=D} \\ \text{Dividing both sides by R } \\ \Rightarrow\frac{RT}{R}=\frac{D}{R} \\ \Rightarrow T=\frac{D}{R} \\ \text{If D=40, and r=8,} \\ \text{then} \\ T=\frac{40}{8}=5s \end{gathered}$

Therefore, the time is 5s