A) 75 minutes
B) 60 minutes
C) 40 minutes
D) 30 minutes
Correct Answer: B
Solution :
[b] \[\frac{4}{3}\] of usual time = Usual time+20 minutes \[\therefore \frac{1}{3}\]rd of. Usual time = 20 minutes \[\therefore \] Usual time \[=20\times 3=60\] minutesYou need to login to perform this action.
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