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28 Oct 2024, 01:30
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Difficulty:
15%
(low)
Question Stats:
80% (01:05) correct
20%
(01:23)
wrong
based on 135
sessions
History
Date
Time
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Not Attempted Yet
In Papersville, 6,000 people read either the Herald or the Tribune. How many people read both newspapers?
(1) Of the people in Papersville, 2,000 read the Herald only.
(2) Of the people in Papersville, 2,500 read the Tribune only.
(1) Of the people in Papersville, 2,000 read the Herald only.
(2) Of the people in Papersville, 2,500 read the Tribune only.
28 Oct 2024, 06:16
Kudos
Bookmarks
let's call x the number of people read both newspapers
6000-x+neither=total
1/ Herald only =2000 insufficient
2/ Tribune only = 4500 insufficient
1+2 :
6000-x+neiter=total (1)
4500+x+neither=total (2)
(1)-(2) => 1500-2x=0 ie x= 750 sufficient
6000-x+neither=total
1/ Herald only =2000 insufficient
2/ Tribune only = 4500 insufficient
1+2 :
6000-x+neiter=total (1)
4500+x+neither=total (2)
(1)-(2) => 1500-2x=0 ie x= 750 sufficient
29 Oct 2024, 13:07
Kudos
Bookmarks
.......H....... NH.......T
T.........................2500
NT.......................3500
T....2000.....4000...6000
It doesn't appear to be solvable with a double matrix. What am I missing here?
T.........................2500
NT.......................3500
T....2000.....4000...6000
It doesn't appear to be solvable with a double matrix. What am I missing here?
