To solve this problem you must apply the proccedure shown below:
1. You have that Darren can get to work in
and <span>with the traffic and lights, he can average </span>
<span>.Therefore, you must apply the formula for calculate the distance, which is:
</span>
<span>
Where </span>
<span> is the speed and </span>
<span> is the time.
2. The time in hours is:
</span>
<span>
3. Substituying values, you have:
</span>
<span>
The answer is:</span>