CAT Quant Practice Problems

Question: A car is being driven, in a straight line and at a uniform speed, towards the base of a vertical tower. The top of the tower is observed from the car and, in the process, it takes 10 min for the angle of elevation to change from 45° to 60°. After how much more time will this car reach the base of the tower?

\(5\left( {\sqrt 3 + 1} \right)\)
\(6\left( {\sqrt 3 + \sqrt 2 } \right)\)
\(7\left( {\sqrt 3 - 1} \right)\)
\(8\left( {\sqrt 3 - 2} \right)\)
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