IBPS PO Prelims Model Paper 1 with solutions

Question : 84 of 100

Marks: +1, -0

Reena travels for first 3 hours at a speed of 20 km/h, the next 2 hours at a speed of 30 km/h and the last 2 hours at a speed of 40 km/h. The average speed at which she covers the journey is