Interesting! is it B 12.5%
Let's say there are 100 motorists.
10% exceeded speed limit and received tickets. = 10
20% of the motorists who exceeded speed limits did not receive tickets.
So 80% of them did receive speeding tickets, who are the 10 people we know.
Hence 80% of the exceeded + got tickets = 10
OR Actual number of people who exceeded = 100*10/80 = 12.5%
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