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 P —————————————————- Q

    <————————–d———————–>

Bala speed = u

Adrian speed = u + 48

In 40 mins,  using  speed x time = distance,

40u = (3/10)d   

40(u+48) = (5/10)d  => 40u + 1920 = (5/10)d

Difference in distance between Adrian and Bala = (2/10)d = 1920  => d = 9600

Hence the distance between P and Q is 9600m

 

 

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