Shyam drives his car 30 km at a speed of 45 km h and for the next 1 h 20 m he drives it at a speed o...........

Quantitative Aptitude (CGL) Time & distance

Shyam drives his car 30 km at, a speed of 45 km/h and. for the next 1 h 20 m, he drives it at a speed of 51 km/h. Find his

average speed (in km/h) for the entire jomney.

This questions was previously asked in

SSC CGL 18th April 2022 Shift-1

48.5

To find Shyam's average speed, we need to figure out the total distance he traveled and the total time he spent traveling:

- First part of the journey:

- Distance = 30 km

- Speed = 45 km/h

- Time = Distance/Speed = 30/45 = 2/3 hour

- Second part of the journey:

- Speed = 51 km/h

- Time = 1 hour 20 minutes = 1 + 20/60 = 1.333 hours

- Distance = Speed × Time = 51 × 1.333 = 68 km

- Total distance = 30 km + 68 km = 98 km

- Total time = 2/3 hour + 1.333 hours = 2 hours

- Average speed = Total distance / Total time = 98 km / 2 hours = 49 km/h

The correct option is:

- Option 1: 49 km/h

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