Time and Distance Practice Test 3 with solutions

Question : 30 of 40

Marks: +1, -0

Two 100 m long buses pass each other. When they go in the same direction, the faster one takes 60 seconds to pass the other and if they go in the opposite direction, they pass each other completely in 10 seconds. Find the speed of the slower one.

7 km/hr
10 km/hr
30 km/hr
20 km/hr
None of these

Validate

Solution:

Let the speed of the faster bus = x m/sec
Speed of the slower bus = y m/sec

{200}/{x-y}

= 60
⇒ x - y =

{10}/3

... (i)

{200}/{x+y}

= 10
⇒ x + y = 20 ... (ii)
Equating (i) and (ii) we get,
y =

{25}/3

m/s = 30 km/hour

Go to Question:

Prev Question

Next Question