A police man follows a thief who 990m ahead of him.If they run at 25km/hr and 16km/hr respectively . how long Will the police man catch the theif .
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Let the police and thief meet after t hour and at a distance d km after the thief has traveled
police has traveled 0.99+d km in t hour
25×t=0.99+d.,,.(1)
The thief has traveled d km in t hour
16×t=d.,...(2)
Put this value of d in (1)
25t=0.99+16t
9t=0.99
t=0.11 hour Ans
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