Events & Promotions
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Sep 1507:00 PM EDT
-09:00 PM EST
Elite scores are possible when you enroll in a powerful GMAT course, taught live online + 6 months access to TTP OnDemand video courses included! Class starts Tues/Thurs Sept. 15, 2026 - Nov. 15, 2027, 7:00pm-9:00pm EST
Sep 2107:00 PM EDT
-10:00 PM EDT
Boost your GMAT score in less than one month in a live online class + 6 months access to TTP OnDemand video courses included! Class starts Mon, Tues, Wed, Thur, Fri Sept. 21, 2026 - Oct. 9, 2027, 7:00pm-10:00pm EST
26 Jan 2021, 09:45
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
91% (01:56) correct
9%
(03:04)
wrong
based on 35
sessions
History
Date
Time
Result
Not Attempted Yet
The marks obtained by Denice in 4 subjects in an examination are in the ratio 5 : 6 : 7 : 8. The maximum marks that can be secured in any subject are 100, and the marks scored by Denice in each subject are integers. If he has obtained 80 marks in one of the subjects, find his average marks.
(A) 55
(B) 60
(C) 65
(D) 66
(E) 66.67
(A) 55
(B) 60
(C) 65
(D) 66
(E) 66.67
26 Jan 2021, 20:52
Kudos
Bookmarks
Important: "the marks scored by Denice in each subject are integers"
Since the marks obtained in all the subjects are integer and only \(5, 8\) satisfies the condition.
Ans C
Since the marks obtained in all the subjects are integer and only \(5, 8\) satisfies the condition.
Ans C
Attachments
Delete.png [ 10.9 KiB | Viewed 7111 times ]
26 Jan 2021, 23:18
Kudos
Bookmarks
Let the marks be 5x, 6x, 7x and 8x
Let 5x = 80, then x = 16. We see that 7x = 102, which crosses the max marks of 100
let 6x = 80, then x = 40/3. 7x then becomes a fraction, and we are told that all the marks are integers.
Similarly, if 7x = 80, we get marks as fractions.
If 8x = 80, then x = 10 and the marks are 50, 60, 70 and 80.
The average is therefore (50 + 60 + 70 + 80)/4 = 65
Option C
Arun Kumar
Let 5x = 80, then x = 16. We see that 7x = 102, which crosses the max marks of 100
let 6x = 80, then x = 40/3. 7x then becomes a fraction, and we are told that all the marks are integers.
Similarly, if 7x = 80, we get marks as fractions.
If 8x = 80, then x = 10 and the marks are 50, 60, 70 and 80.
The average is therefore (50 + 60 + 70 + 80)/4 = 65
Option C
Arun Kumar
