Latest HR Interview Aptitude Question SOLUTION: In an examination series, which consists of 5 exams, Arvind scored an average of 60 marks in the first 3 exams and an average of 70 in the last 4 exams, what is the average score o

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(#M40037772) HR INTERVIEW Logical Reasoning question tcs Keep an EYE

In an examination series, which consists of 5 exams, Arvind scored an average of 60 marks in the first 3 exams and an average of 70 in the last 4 exams, what is the average score of Arvind for the first and last two exams if his average scores of all the five exams are 65?

Asked In HR Interview PRIYA (9 years ago)

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vinusha reddy  (9 years ago)

63.33
let exams be a,b,c,d,e
given a+b+c/3=60=>a+b+c=180.........(1)
b+c+d+e/4=70=>b+c+d+e=280...........(2)
a+b+c+d+e/5=65=>a+b+c+d+e=325.......(3)
by calculating 2 and 3 we get a=45
calculating 1 and 3 we get d+e=145
then average of first and last two exams =a+d+e/3=>45+145/3=>190/3=63.33

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sunil kumar  (9 years ago)

30 is the answer


Supposing the exams to be a,b,c,d,e

acc. to ques.

(a+b+c)/3=60
=> a+b+c=180 -----eq.1

and

(b+c+d+e)/4=70
=> b+c+d+e=280 -----eq.2

and

(a+b+c+d+e)/5=65
putting the value of b+c+d+e

=> a+280=325
=> a=325-280
=> a=45

putting the value of a in eq.1,we get

=> 45+b+c=180
=> b+c=135

putting the value of b+c in eq.2

=> 135+d+e=280
=> d+e=45

now, we need to find the average of a,d,e

=> (a+d+e)/3 = (45+45)/3 = 90/3 = 30

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Ritu raj  (9 years ago)

103.33
by solving these 3 eqns:
(e1+e2+e3+e4+e5)/5=65
(e1+e2+e3)/3=60
(e2+e3+e4+e5)/4=70
find (e1+e4+e5)/3

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