On a track for remote controlled racing cars racing car A completes the track in 28 seconds while racing car B completes it in 24 seconds. if they both start at the same time after how many seconds will they be side by side again?

After 168 seconds, both the cars will be side by side again.

Step-by-step explanation:

On a track for remote controlled racing cars racing car A completes the track in 28 seconds while racing car B completes it in 24 seconds.

To know after how many seconds will they be side by side again, we will find the LCM of 24 and 28.

24 = 2 x 2 x 2 x 3

28 = 2 x 2 x 7

LCM is = 2 x 2 x 2 x 3 x 7 = 168

Hence, after 168 seconds, both the cars will be side by side again.

We'll take out LCM of 24 seconds and 28 seconds.

that is, 168 seconds.

That means,

Car A and Car B will be side by side to each other after 2 mins 48 seconds after start.