Dell Average Questions

Question 1

Time: 00:00:00
If a, b, c, d, e are five consecutive odd numbers, their average is

5(a + 4)

5(a + 4)

abde/5

abde/5

5(a + b + c + d + e)

5(a + b + c + d + e)

a + 4

a + 4

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Question 2

Time: 00:00:00
The average of 20 numbers is 15 and the average of first five is 12. 
The average of the rest is

16

16

15

15

14

14

13

13

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Question 3

Time: 00:00:00
A man whose bowling average is 12.4, takes 5 wickets for 26 runs 
and thereby decreases his average by 0.4. The number of wickets
taken by him before his last match is?

82

82

83

83

84

84

85

85

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Question 4

Time: 00:00:00
16 men went to a restaurant. Fifteen of them paid Rs.80 each 
and the sixteenth man paid Rs.75 more than the average of all
the 16 men. What is the total bill?

Rs 1360

Rs 1360

Rs 1350

Rs 1350

Rs 1440

Rs 1440

Rs 1680

Rs 1680

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Question 5

Time: 00:00:00
A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 
and Rs. 6562 for 5 consecutive months. How much sale must he
have in the sixth month so that he gets an average sale of Rs. 6500?

Rs. 4991

Rs. 4991

Rs. 5991

Rs. 5991

Rs. 6001

Rs. 6001

Rs. 6991

Rs. 6991

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Question 6

Time: 00:00:00
The average of three numbers is 77. The first number is twice the 
second and the second number is twice the third. Find the first number.

33

33

66

66

77

77

132

132

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Question 7

Time: 00:00:00
The average weight of a class of 34 students is 45 kg. 
If the weight of the teacher is included the average rises by 400 gm.
The weight of the teacher is?

60

60

61

61

63

63

59

59

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Question 8

Time: 00:00:00
Average age of 10 elephants increases by 8 years when the 2 tortoises
are included in place of 2 elephants of age 50 and 60.
Find the average age of tortoises?

100

100

97

97

95

95

93

93

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Question 9

Time: 00:00:00
In an exam out of 1500 students, 80% boys and 70% girls are passed. 
If total pass percentage was 75%, how many boys appeared
in the exam and how many boys failed?

150

150

160

160

170

170

180

180

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Question 10

Time: 00:00:00
Find the average and sum of all even numbers from 200 to 500?

300

300

350

350

320

320

330

330

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Question 11

Time: 00:00:00
The average of 20 numbers is zero. Of them, at the most, 
how many may be greater than zero ?

0

0

-1

-1

1

1

none of these

none of these

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Question 12

Time: 00:00:00
The average of 7 consecutive numbers is 20. The largest of 
these numbers is :

21

21

22

22

23

23

24

24

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["0","40","60","80","100"]
["Need more practice! \n","Keep trying! \n","Not bad! \n","Good work! \n","Perfect! \n"]

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