IBPS SO Prelims Exam Model Paper 4

Given:
Travel 40 minutes at 30km/h
Travel 20 minutes at 4km/h
Calculation:
Distance covered in 40 minutes = (

30

60

) × 40 = 20 km
Distance covered in 20 minutes = (

4

60

) × 20 = 4/3 km
Total time = 40 + 20 = 60 minutes = 1 hour
Average speed =

Total‌distance

Total‌time

∴ Average speed =

[20+( 4 3 )]

1

=

64

3

km/h