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13 May 2019, 02:00
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
87% (02:31) correct
13%
(02:18)
wrong
based on 45
sessions
History
Date
Time
Result
Not Attempted Yet
Sangho uploaded a video to a website where viewers can vote that they like or dislike a video. Each video begins with a score of 0, and the score increases by 1 for each like vote and decreases by 1 for each dislike vote. At one point Sangho saw that his video had a score of 90, and that 65% of the votes cast on his video were like votes. How many votes had been cast on Sangho's video at that point?
A. 200
B. 300
C. 400
D. 500
E. 600
A. 200
B. 300
C. 400
D. 500
E. 600
Archit3110
13 May 2019, 02:41
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Bunuel
total liked videos; 65%
disliked ; 35 %
total 65-35 ; 30
30*300/100 ; 90
IMO B
13 May 2019, 03:01
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No. of likes = x
No. of dislikes = y
Total no. of likes = N = x + y
Let N = 100n
So, x=65n & y=35n
So, x*1 + y*(-1) = total score = 90
=> x - y = 90
=> 65n - 35n = 90
=> 30n = 90
=> n = 3
=> N = 100n = 300
IMO B
Posted from my mobile device
No. of dislikes = y
Total no. of likes = N = x + y
Let N = 100n
So, x=65n & y=35n
So, x*1 + y*(-1) = total score = 90
=> x - y = 90
=> 65n - 35n = 90
=> 30n = 90
=> n = 3
=> N = 100n = 300
IMO B
Posted from my mobile device
