Walking at 50% of his usual speed a man takes 24 minutes more to cover a distance. What is his usual time to cover this distance?
Choose the most appropriate option:
A) 24
B) 36
C) 42
D) 48
E) 54
speed is inversly proprtional to time   walking at 50% of speed meand 1/2s takes 2t.   It takes 24 minutes extra to cover the distance. then   2t=t+24= 
<gadget id="calculator">+24</gadget>
<output>24</output>
24.   Option 24 is correct
<result>A</result>
Walking at 50% of his usual speed a man takes 24 minutes more to cover a distance. What is his usual time to cover this distance?