During a journey of 120 km Rahi drives first 60 km at the speed of 60 km h next 30 km at 60 km h and...........

Quantitative Aptitude (CPO) Time & distance

During a journey of 120 km, Rahi drives first 60 km at the speed of 60 km/h, next 30 km at 60 km/h and the remaining 30 km at

the speed of 30 km/h. Determine the average speed.

This questions was previously asked in

SSC CPO 11th Nov 2022 Shift 3

48 km/h

33.33 km/h

50 km/h

40 km/h

- Rahi's journey is divided into three segments.

- First segment: 60 km at 60 km/h. This takes 1 hour.

- Second segment: 30 km at 60 km/h. This takes 0.5 hours.

- Third segment: 30 km at 30 km/h. This takes 1 hour.

- Total distance is 120 km.

- Total time for the whole journey is 2.5 hours (1 + 0.5 + 1).

- Average Speed = Total Distance / Total Time = 120 km / 2.5 hours = 48 km/h.

- Option 1: 48 km/h is the correct answer.

- Option 2: 33.33 km/h is too low.

- Option 3: 50 km/h slightly higher than calculated.

- Option 4: 40 km/h is too low.

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