Question

3. Three men start together to travel the same way around a circular track of 11 km. Their speeds are 4,5.5 and 8 km per hour respectively. When will they meet at the starting point?​

Answer 1

Step-by-step explanation:

Time for one revolution by each of man =

5

13

,

2

13

13

,

9

13

=

5

13

,

1

2

,

9

13

∴Thetimewhentheywillmeetatthestartingpoint=L.C.Mof

5

13

,

1

2

,

9

13

=

1

26

h

Hence They will meet at Starting point after 26h

Answer 2

Answer:

22 hours

Step-by-step explanation:

Three -men start together to travel the same way around a circular track of 11 km.

Their speeds are 4, 5.5, and 8 kmph respectively.

Formula used:

Time = Distance/Speed

LCM

Calculation:

Time taken by the three men cover the 11 km

⇒ Time1 = 11/4 hours

⇒ Time2 = 11/5.5 = 2 hours

⇒ Time2 = 11/8 hours

They meet at the starting point for the first time

LCM of (11/4, 2, 11/8) = LCM of numerator/HCF of denominator

⇒ 22/1

⇒ 22 hours

∴ They meet at after 22 hours.