AFCAT Model Paper 7

Given:
The distance between two points A and B is 200 km
The distance between points B and C is 180 km.
Ram coves the distance AB at a speed of 50 km/hr and that of BC by 60 km/hr.
Formula Used:
Average speed = Total distance travelled/Total time taken.
Time = distance/speed
Calculation:
According to the question
Total distance travelled = 200 + 180
⇒ 380 km
Total time taken =

200

50

+

180

60

=7‌hr.
⇒ Average speed =

380

7

⇒ Average speed = 54.26
⇒ 55 km/hr
∴ The average speed from A to C is 55 km/hr.