d two automobiles meet - how many hours in

Arithmetic MCQ3 (Moving automobiles and time of meeting at a point)

MCQ3: Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving at 60km/h and the other is moving at 40km/h mph. In how many hours will they meet?

a) 2.5                   b)  2.0               c)  1.75                 d) 1.5           e) 1.25


how many hours in the two automobiles will meet!

We imagine automobiles as under

Since two automobiles are moving in the opposite directions – their speeds will be combined and hence relative speed will be sum of both automobile’s speeds !


Actual speed = 60+40 =100 km/hr

So, the distance of 150 km is cover able  by this speed to get at meeting point.

We know;

\[ Distance= Speed \times Time \]


\[ Time= \frac{Distance}{Speed}=\frac{150}{100}=1.5 \]

So the automobiles will take 1.5 hours to get together !-– option d is correct!

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