RRB NTPC Mains or Stage 2 Model Paper 4 with solutions

Question : 37 of 120

Marks: +1, -0

A car travels 25 km an hour faster than a bus for a journey of 500 km. If the bus takes 10 hours more than the car, then the speeds of the bus and the car are

25 km/h and 40 km/h respectively
25 km/h and 60 km/h respectively
25 km/h and 50 km/h respectively
None of these

Validate

Solution:

500/x= 500/ {x +25}+10

⇒ x^2 + 25x – 1250 = 0 ⇒ x = 25

Thus speed of the bus = 25 km/hSpeed of the car = 50 km/h
Alternative:
Difference in speeds 25 km / hr is in onlyoption (c).

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