Madelaine88
On a certain road, 10 percent of the motorists exceed the posted speed limit and receive speeding tickets, but 20% of the motorists who exceed the posted speed limit do not receive speeding tickets. What percent of the motorists on that road exceed the posted speed limit?
A/ 10 1/2%
B/ 12 1/2%
C/ 15%
D/ 22%
E/ 30%
Read one line at a time and analyze it.
On a certain road, 10 percent of the motorists exceed the posted speed limit and receive speeding tickets,
>>>>10% of total motorists exceed speed limit and get tickets
but 20% of the motorists who exceed the posted speed limit do not receive speeding tickets.
>>>>>>20% who exceed the speed limit do not get tickets. Then 80% who exceed the speed limit must be getting tickets.
What percent of the motorists on that road exceed the posted speed limit?
>>>>> So 10% of total motorists = 80% of those who exceed speed limit
So those who exceed speed limits are 1/8 = 12.5% of the motorists
Oh my god Karishma! You are truly a genius! My mind is blown.
On Quant, you singlehandedly blow all the other so called "Experts" out of the water.
Just amazing.
Thanks for such great work.