Quantitative Aptitude Ques 567

Question: A bus started its journey from Ramgarh and reached Devgarh in 44 min at its average speed of 50 km/h. If the average speed of the bus is increased by 5 km/h, then how much time will it take to cover the same distance?

[Corporation Bank (PO) 2010]

Options:

A) 40 mm

B) 38 min

C) 36 min

D) 31 min

E) 49 min

Show Answer

Answer:

Correct Answer: A

Solution:

  • Average speed of bus = 50 km/h and time taken $ =44\min =\frac{44}{60}h $ Distance between Ramgarh and Devgarh $ =50\times \frac{44}{60}km $ Now, new speed = 55 km/h

$ \therefore $ Required time = $ =\frac{50\times 44}{60\times 55}\times 60\min =40\min $