Step-by-step explanation:

Divide the fraction with 4

Reduce the number with factor 4

Multiply the fractions


Answer:
<em>0.615</em>
Step-by-step explanation:
The frequency table is attached below.
We have to calculate, the probability that the student preferred morning classes given he or she is a junior.
i.e 
We know that,

So,

Putting the values from the table,

I believe it is the first one but I might be wrong.
Add the two speeds together, then divide the two, this gives the average speed. Hope this was helpful!