Timer
00:00
Your answer
Difficulty–
right wrong
Pick an answer to see how members did
8question types
Log this miss in the free GMAT error log
Get the error log60days
Get one like this every day: the free 60-day plan
Start the planA certain marathon had 20,000 entrants, 52% of which were female and 30% of these female entrants were professional runners. If 60% of the entrants were professional, how many of the runners on the marathon amateur male runners?
A. 72
B. 720
C. 3,120
D. 8,000
E. 8,880
The OA is B.
I solved this PS question as follows,
Number of females = 52% of 20,000 = 10,400
Professional females = 30% of 10,400 = 3,120
Total professional (M + F) = 60% of 20,000 = 12,000
Thus, male professional = total professional - female professional = 12,000 - 3,120 = 8,880.
Amateur males = Total runners - (total females + professional males) = 20,000 - (10,400 + 8,880) = 720.
Please, can someone explain another way to solving this question? Thanks!
A. 72
B. 720
C. 3,120
D. 8,000
E. 8,880
The OA is B.
I solved this PS question as follows,
Number of females = 52% of 20,000 = 10,400
Professional females = 30% of 10,400 = 3,120
Total professional (M + F) = 60% of 20,000 = 12,000
Thus, male professional = total professional - female professional = 12,000 - 3,120 = 8,880.
Amateur males = Total runners - (total females + professional males) = 20,000 - (10,400 + 8,880) = 720.
Please, can someone explain another way to solving this question? Thanks!
