lf a man walks 3/5th of his original speed and gets 12 minutes late. What is his usual speed?

In this question since distance is constant, speed and time will be inversely proportional. So if speed decrease by 2/5 then the time increases by 2/5. Hence 2/5*T=12
T=12*5/2=30 minutes
what is wrong wi…

Question

lf a man walks 3/5th of his original speed and gets 12 minutes late. What is his usual speed?

In this question since distance is constant, speed and time will be inversely proportional. So if speed decrease by 2/5 then the time increases by 2/5. Hence 2/5*T=12
T=12*5/2=30 minutes 
what is wrong with this approach?

mahima · Answer

yes. the first line is the question. what follows is my doubt.

Paras Mittal · Answer

Is this the complete question?

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