Question

Lena runs

3

miles in

25

minutes. At the same rate, how many miles would she run in

20

minutes?

Answer 1

It is given that Lena runs 3 miles in 25 minutes. We have to find the number of miles she would run in 20 minutes at the same rate.

We know, Speed = Distance/Time --------(1)

or, Distance = Speed * Time. -------(2)

For first case, Distance = 3 miles and Time = 25 minutes. Thus, Speed = 3/25 miles/min [From (1)]

Now, given that she has the same speed(i.e., 3/25 miles/min). Given time is 20 minutes. Thus, we have to find the distance.

Thus, Distance = (3/25)*20 [From (2)]

Thus, Distance = 60/25 = 2.4 miles.

Thus, Lena would run 2.4 miles in 20 minutes at the same rate.