A student walks from his house at 10 km/hr and reaches his school late by 6 minutes. Next day, he increases his speed by 15 km/hr and reaches 4 minutes before school time. How far is the school from his house?

 

  • Option 1)

     

    12 km     

     

  • Option 2)

     

    9 km  

     

  • Option 3)

     

    5 km        

     

  • Option 4)

     

    10 km

     

  • Option 5)

     

    8 km      

     

Answers (1)

Speeds = 10 : 15 => 2: 3

Here the distance is same,

Time = 3: 2

Difference between the times = 6+4 => 10 minutes

As per the observation,

i unit = 10 minutes

3 units = 30 minutes or 1/2 hour

Distance = 10 x 1/2 => 5 Km

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