SBI CLERK 2018 Quantitative Aptitude Quiz No- 2 “Average”
On this quiz no 02 you will practice Average problems for bank exams like SBI Clerk Pre 2018, IBPS Clerk Pre, IBPS RRB 2018 and other 2018 banking exams with detailed Solution, all types of Average questions with tricky solution at free of cost.
1.The ages of Four members of a family are in the year 2010 are
„X‟,‟X+12‟,‟X+24‟ and „X+36‟. After some years Oldest among them was dead
then average reduced by 3. After how many years from his death, the average
age will same as in 2010?
1. 2 Years
2. 3 Years
3. 4 years
4. 6 Years
5. Cannot be determined
2.There are 459 students in a hostel. If the number of students increased by 36,
the expenses of the mess increased by Rs.81 Per day while the average expenditure
per head reduced by 1. Find the original expenditure of the mess?
1. 7304
2. 7314
3. 7324
4. 7334
5. 7344
3.The average cost 32 different Mobiles is Rs. 9000. Among them, Oppo which is the
costliest is 70% higher price than the cheapest Mobile Lava. Excluding those
both mobiles, the average of the Mobiles is Rs.8880. Then what is the cost of Oppo
Mobile?
1. Rs. 10000
2. Rs. 11600
3. Rs. 12400
4. Rs.13600
5. Cannot be determined
4. Dhoni scored 8000 runs in a certain number of innings. In the next five
innings, he was out of form and hence, could make only 85 runs, as a result his
average reduced by 1 run. How many innings did he play in total?
1. 160
2. 165
3. 170
4. 175
5. Cannot be determined
5.The average weight of 40 Students is 32. If the Heaviest and Lightest are
excluded the average weight reduces by 1. If only the Heaviest is excluded then the
average is 31. Then what is the weight of the Lightest?
1. 30
2. 31
3. 32
4. 33
5. Cannot be determined
6.Average of 17 students in a class is X. When their marks are arranged in
ascending order it was found to be in Arithmetic Progression. The class teacher
found that rank the students who ranked 15th, 11th, 9th and 7th had copied the
exam and hence they are suspended. Now the average of the remaining class is Y. Then
1. X =Y
2. X >Y
3. X<Y
4. X = 2Y
5. Data insufficient
7. Pranav went to the bank at the speed of 60 kmph while returning for his home he
covered the half of the distance at the speed of 10 kmph, but suddenly he
realized that he was getting late so he increased the speed and reached the home
by covering rest half of the distance at the speed of 30 kmph.The average speed of
the Pranav in the whole length of journey is?
A. 24 kmph
B. 14 kmph
C. 16 kmph
D. 10 kmph
E. 28 kmph
8.The average price of 80 mobile phones is Rs.30,000. If the highest and lowest price
mobile phones are sold out then the average price of remaining 78 mobile
phones is Rs. 29,500. The cost of the highest mobile is Rs.80,000. The cost of
lowest price mobile is?
A. Rs. 18000
B. Rs. 15000
C. Rs. 19000
D. Can’t be determined
E. None of these
9.In a Company the average income of all the employees is Rs. 20000 per month.
Recently the company announced increment of Rs. 2000 per month for all
the employees. The new average income of all the employees is?
A. 22000
B. 24000
C. 28000
D. 26000
E. None of these
10.The average expenditure of Sharma for the January to June is Rs. 4200 and he
spent Rs. 1200 in January and Rs.1500 in July. The average expenditure for the
months of February to July is:
A. 2750
B. 3250
C. 4250
D. 4500
E. 3500
Answer
1.Answer – 2. 3 Years
Explanation:
In 2010: 4x+72/4 = x+18
After death : 3x+36+3N/3 = x+18-3
N = 3 years
3x+36+3N/3 = (x+18)
N = 6 years
6-3 = 3 years from his death
2.Answer – 5. 7344
Explanation:
Total expenditure = 459x
36 students joined then total expenditure =
459x+81
average = 459x+81/495 = x-1
x = 16
original expenditure = 16*459 = 7344
3.Answer & Explanation
Answer – 4. Rs.13600
Explanation:
L+O = 21600
O = L*170/100
O = 13600
4.Answer – 2. 165
Explanation:
8000/n = a
8085/n+5 = a-1
n² + 90n – 40000 = 0
n = 160
n + 5 = 165
5.Answer – 2. 31
Explanation:
40*32 = 1280
1280-H/39 = 31
H =71
1280-71- L/38 = 31
L = 31
6.Answer – 3. X<Y
Explanation:
17X = 17/2 (2a+16d)
X = a+8d
13Y = 17/2(2a+16d) – (4a+26d)
Y = a+8.46d
7.Answer – A. 24 kmph
Explanation:
Distance between home and Bank – x km
Total distance = x + x = 2x
Total time taken = x/60 + (x/2)/10 + (x/2)/30
= x/12
Average speed = 2x/(x/12) = 24 kmph
8.Answer – C. Rs. 19000
Explanation :
The price of the costliest and cheapest
mobile = (80*3000) – (78*29500) = 99000
Cheapest Mobile Price = 99000 – 80000 =
19000
9.Answer – A. 22000
Explanation:
Average income of all employees = 20000
New Average income of all employees =
22000(Average also increased by 2000)
10.Answer – C. 4250
Explanation:
Total Expenditure(Jan – June) = 4200 * 6 =
25200
Total Expenditure(Feb – June) = 25200 –
1200 = 24000
Total Expenditure(Feb – July) = 24000 +
1500 = 25500/6 = 4250
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