Exams › SSC CGL (Prelims) › General

A bus travels 30% of its total route at 24 km/h and the rest at 36 km/h. What is its average speed over the whole trip?

1. 28.8 km/h
2. 29.4 km/h
3. 30 km/h
4. 31.3 km/h

Correct answer: 31.3 km/h

Solution

Take the total distance as 100 km. Then 30 km is covered at 24 km/h and 70 km at 36 km/h, so total time is 30/24 + 70/36 hours. Average speed equals total distance divided by total time, which gives about 31.3 km/h.

Related SSC CGL (Prelims) General questions

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