Average Questions For Bank Clerk:
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Question 1:
On combining two groups of students having 30 and 40 average marks respectively in an exam, the resultant group has an average score of 34. Find the ratio of the number of students in the first group to the number of students in the second group.
a) 2 : 1
b) 3 : 2
c) 3 : 1
d) 4 : 3
e) None of these
Question 2:
The average of five numbers is 49 the average of the first and the second numbers is 48 and the average of the fourth and fifth number is 28. What is the third number ?
a) 92
b) 91
c) 95
d) Cannot be determined
e) None of these
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Question 3:
The average speed of a train is 3 times the average speed of a car . The car covers a distance of 520 kms in 8 hours .how much distance will the train cover in 13 hours ?
a) 2553 kms
b) 2585 kms
c) 2355 kms
d) 2535 kms
e) None of these
Question 4:
The average weight of 21 boys was recorded as 64kg. If the weight of the teacher is added, the average increased by one kg. What was the teacher’s weight?
a) 86 kg
b) 64 kg
c) 72 kg
d) 98 kg
e) None of these
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Question 5:
The total of the ages of a class of 75 girls is 1050 years the average age of 25 of them is 12 years and that of another 25 is 16 years Find the average age of the remaining girls
a) 12 years
b) 13 years
c) 14 years
d) 15 years
e) None of these
Answers and solutions for Average Questions For Bank Clerk:
Solutions:
1) Answer (B)
Required ratio = (40-34)/(34-30)=6/4=3/2
2) Answer (E)
Let the numbers be a,b,c,d,e.
Hence (a+b+c+d+e)/5=49
(a+b)/2=48, a+b=96.
(d+e)/2=28,d+e=56
c=245-96-56=93
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3) Answer (D)
Let speed of train be x and speed of car be y.
Car covers 520km in 8 hrs, it’s speed= 520/8= 65km/hr
Speed of train = 3 * 65= 195km/hr
Distance covered by train in 13 hrs = 13*195= 2535km
4) Answer (A)
The average weight of 21 boys is 64 Kgs.
The average weight of 21 boys and the teacher is 65 Kgs.
So, total weight of 21 boys is 21*64 = 1344
The weight of 21 boys and the teacher = 22*65 = 1430
Hence, the weight of the teacher is 1430 – 1344 = 86 Kgs
5) Answer (C)
Let there be three groups of 25 girls each having averages a, b and c.
25a+25b+25c=1050
a+b+c=42
Now, a = 12 and b = 16
hence, c = 14
Therefore average age of remaining 25 girls = c = 14 years.
Hence, option C is correct option.
