SSC CGL 26 Oct 2014 Shift 1 Paper

Question : 121 of 200

Marks: +1, -0

If I walk at 5km/hr, I miss a train by 7 minutes. However, if I walk at 6 km/hr I reach the station 5 minutes before the departure of the train. The distance between my house and the station is

5 km
6.5 km
7 km
6 km

Validate

Solution:

Distance of station from house = x km (let)
Difference of time = 7 + 5
= 12 minutes =

{12}/{60}

hour
=

1/5

hour
Time =

{\Distance}/{\Speed}

∴

x/5-x/6

1/5

⇒

{6x-5x}/{30}

1/5

⇒

x/{30}

1/5

⇒ x =

{30}/5

= 6 km.

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