Kathleen can walk 5 miles 55 minutes. Jeff can walk 3 miles in 45 minutes. Which statement is true about how fast Kathleen and Jeff walk?

In this question there is absolutely no statement given and so the statement cannot be confirmed. Only the speed of Kathleen and Jeff can be found. There are several information's already given and based on them we can find the speeds.

We already know

Speed = Distance/Time

No

Distance traveled by Kathleen = 5 miles

Time taken by Kathleen to travel this distance = 55 minutes

Then

Speed of Kathleen = 5/55 miles/minute

1/11 miles/minute

Now coming to the case of Jeff

Distance traveled by Jeff = 3 miles

Time taken by Jeff to travel the given distance = 45 minutes

Speed of Jeff = 3/45 miles/minute

= 1/15 miles/minute

So Kathleen travels at a speed of 1/11 miles per minute and Jeff travels at a speed of 1/15 miles per minute. It can also be said that Kathleen has a faster speed than Jeff.