Question

Lin runs 5 laps around a track in 6 minutes. If Lin runs 21 laps at the same rate, how long will it take her?

Answer 1

Answer:

It will take 25.2 minutes for Lin to run 21 laps.

Explanation:

This question can be solved by a rule of three.

If takes Lin 6 minutes to run 5 laps. So how many minutes it is going to take for her to run 21 laps?

5 laps - 6 minutes

21 laps - x minutes

$5x = 21*6$

$x = 21*1.2$

$x = 25.2$

It will take 25.2 minutes for Lin to run 21 laps.

Answer 2

Answer:

It will take 25.2 minutes to complete 21 laps.

Explanation:

The rate of covering 5 laps is:

$V=\frac{6}{5}$

Therefore, the time taken to cover 21 laps is:

$t=\frac{21}{V} \\t=\frac{21*6}{5} \\t= 25.2$

Hence, it will take 25.2 minutes or 25 minutes 12 seconds for Lin to complete 21 laps.  

For more information, refer to the link:

https://brainly.com/question/19638677?referrer=searchResults