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  • IBPS RRB CWE Exam Quantitative Aptitude Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of Quantitative Aptitude Averages for IBPS RRB CWE Exam student. This free online Quantitative Aptitude study material for IBPS RRB CWE Exam will help students in learning and doing practice on Averages topic of IBPS RRB CWE Exam Quantitative Aptitude. The study material on Averages, help IBPS RRB CWE Exam Quantitative Aptitude students to learn every aspect of Averages and prepare themselves for exams by doing online test exercise for Averages, as their study progresses in class. Kidsfront provide unique pattern of learning Quantitative Aptitude with free online comprehensive study material and loads of IBPS RRB CWE Exam Quantitative Aptitude Averages exercise prepared by the highly professionals team. Students can understand Averages concept easily and consolidate their learning by doing practice test on Averages regularly till they excel in Quantitative Aptitude Averages.


Averages
The average height of 35 students in a class is 4`2``. Three students of average height 4`10`` moved to new section while 6 students of total height 33`4`` joined the class. The average height of the students in the class is now

a) 4`6``
b) 5`
c) 4`4``
d) 4`8``



Answer
Solution
Correct Answer Is : 4`4``
Solution Is : Total height of 35 students = 50" X 35 = 1750`` total height of 3 outgoing students = 58 X 3 = 174`` Total height of 32 students = 1750 - 174 = 1576`` Total height of 38 students = 1576 + 33 X 12 + 4 = 1976" Required average height = 1976/38 = 52`` = 4`4``
In a class party arranged for 43. students, 26 liked both ice cream and cold drinks, 7 disliked ice cream and 4 disliked both, Then the number of students who liked ice-cream

a) 26
b) 33
c) 32
d) 30



Answer
Solution
Correct Answer Is : 32
Solution Is : Required number of students = 43 - 7 = 32
The average marks obtained by a student in 6 subjects is 88. On subsequent verification it was found that the marks obtained by him in a subject was wrongly copied as 86 instead of 68. The correct average of the marks obtained by him is

a) 85
b) 87
c) 84
d) 86



Answer
Solution
Correct Answer Is : 85
Solution Is : Correct Average marks = 88-[(86-68)/6] =88-3 = 85
A librarian purchased 50 story-books for his library. But he saw that he could get14 more books by spending Rs. 76 more and the average price per book would be reduced by Re. 1. The average price (in Rs.) of each book he bought, was :

a) 5
b) 10
c) 25
d) 20



Answer
Solution
Correct Answer Is : 10
Solution Is :
The average of 7, 11, 15, x, 14, 21, 25 is 15, then the value of x is

a) 13.3
b) 12
c) 3
d) 14.5



Answer
Solution
Correct Answer Is : 12
Solution Is : 7 +11+15+x+14+21+25 = 15*7;
93+x =105;
x=105 -93 =12.

a) 42.5
b) 46.5
c) 50.5
d) 38.5



Answer
Solution
Correct Answer Is : 38.5
Solution Is : (4) 12+22+32+?+n2
=n(n+1)(2n+1)/6
?Required average
=(n+1)(2n+1)/6
=(10+1)(2×10+1)/6
=(11×21)/16=77/2=38.5
The average of the runs made by Raju, Shyam and Hart is 7 less than that made by Shyam, Had and Kishore. If the number of Kishore`s run is 35, what is Raju`s run ?

a) 14
b) 21
c) 35
d) 7



Answer
Solution
Correct Answer Is : 14
Solution Is : (1) Raju+Shyam+Hari=x
Kishore+Shyam+Hari=x+21
Therefore, Runs scored by Raju=35-21=14
The average age of four boys, five years ago was 9 years. On including a new boy, the present average age of all the five is 15 years. The present age of the new boy is

a) 14 years
b) 6 years
c) 15 years
d) 19 years



Answer
Solution
Correct Answer Is : 19 years
Solution Is : Sum of the present ages of four
boys=9*4+20=56 years
Sum of the present ages of five
boys=15*5=75 years
Therefore present age of new boy=75-56=19 years.
If the average of 39, 48, 51, 63, 75, 83, x and 69 is 60, then the value of x is

a) 52
b) 53
c) 50
d) 51



Answer
Solution
Correct Answer Is : 52
Solution Is : 39+48+51+63+75+83+x+69=60*8
⇒428+x=480
⇒x=480-428=52
A batsman makes a score of 58 runs in the 15th innings and thus increases his average by 3 runs. What is the average after 15th innings ?

a) 12
b) 14
c) 16
d) 18



Answer
Solution
Correct Answer Is : 16
Solution Is : Average before 15th innings =58-15x3=13
Therefore, required average=13+3=16
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