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Verbal Reasoning
Logical Reasoning
NCC Bank Limited
Computer Science
বাংলা ভাষা ও সাহিত্য
ইসলামিয়াত প্রশ্ন
GK
43th Bcs Preliminary
"Education-Instruction-Inspiration"
Aptitude Test
Verbal Reasoning
Logical Reasoning
NCC Bank Limited
Computer Science
বাংলা ভাষা ও সাহিত্য
ইসলামিয়াত প্রশ্ন
GK
43th Bcs Preliminary
Basic Bank Assistan Manager -2012
Mathematics
1.
In a class, the average marks attained in an exam is 80. The average of students who scored below 75 is 65. The average of students who scored 75 or more is 90. If the total number of students in this class is 20, how many students scored 75 or more?
[Basic Bank Asst.Manager-2012 : 2012]
1. 6
1
2. 8
2
3. 10
3
4. 12
4
5. None of these
5
Answer
Answer
: 12
Explanation:
Let, number of students who score 75 or more are X
Then,
90*X +65*(20-X)/20=80
⇒90x + 1300-65x=1600
⇒25x= 300
⇒ x= 12
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