Question:The ratio between the rates of walking of A and B is 2 : 3. If the time taken by B to cover that much distance is : 

A 24 
B 38 
C 48 
D 54 

+ Answer
D 

+ Explanation
Ratio of rates of working = inverse ratio of time taken

`:. 2/3 = 36/x => 2x = 108 => x = 54` min.

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Irin Moni

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