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A train of 150 meter length is going towards north direction at a speed of $10 \mathrm{~m} / \mathrm{sec}$. A parrot flies at the speed of $5 \mathrm{~m} / \mathrm{sec}$ towards south direction parallel to the railway track. The time taken by the parrot to cross the train is
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10 sec
Relative velocity
$\begin{aligned} & =10+5=15 \mathrm{~m} / \mathrm{sec} \\ & \therefore t=\frac{150}{15}=10 \mathrm{sec}\end{aligned}$
$\begin{aligned} & =10+5=15 \mathrm{~m} / \mathrm{sec} \\ & \therefore t=\frac{150}{15}=10 \mathrm{sec}\end{aligned}$
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