Shahrukh starts from Barabanki to Fatehpur 1 hour after Ajay starts Shahrukh meets Kajol 1 5 hours a...........

Quant (SSC) Time & distance

Shahrukh starts from Barabanki to Fatehpur , 1 hour after Ajay starts. Shahrukh meets Kajol 1.5 hours after Shahrukh starts. If the speed of Shahrukh is at least 20km/h faster than the speed of Kajol. What is the minimum speed of Shahrukh to overtake Ajay, before he meets Kajol?

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Explanation:

Let t be the time after Karina starts, when she meets sahid, then
t= 300/(x+y)
This should be less than 2.5 or (x+y)>120
Since y= 3x/2 => y > 72
This (y>72) is greater than 67.5 km/h and hence Saif will always overtake sahid before he meets karina.

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