# Wiley Edge Averages Quiz-4

Question 1

Time: 00:00:00
What will be the average cost of StringEnergy Drink per litre for the three years if Harvey spends Rs. 4,080 on it each year ? If he buys StringEnergy Drink for three years in a row. He purchases StringEnergy Drink for Rs. 7.50 per litre in the first year, Rs. 8.00 per litre in the second year, and Rs. 8.50 per litre in the third year.

7.50 Rs

7.50 Rs

6.55 Rs

6.55 Rs

8.98 Rs

8.98 Rs

7.98 Rs

7.98 Rs

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Question 2

Time: 00:00:00
Doctors in a Medical Check Up Campaign which was held in a school stated that the average weight of 21 boys was recorded as 64 kg. If the weight of the teacher was added, the average increased by 1 kg. So what would be the teacher’s weight ?
Explanation:
Total weight of 21 boys = 64 × 21 = 1344 kg

Given that if the weight of the teacher was added, the average increased by one kg
∴ Total weight along with the teacher = 65 × 22 = 1430 kg

Now, teacher's weight = 1430 – 1344 = 86 Kg

80 Kg

80 Kg

86 Kg

86 Kg

79 Kg

79 Kg

81 Kg

81 Kg

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Question 3

Time: 00:00:00
In a survey during Aadhaar Card generation in a particular area, The Data Analyst concluded that the average age of 13 applicants is 36 years. Now if the age of one more applicant is added the average decreases by half a year. So, what will be the age of the new applicant ?

23 Yrs

23 Yrs

30 Yrs

30 Yrs

26 Yrs

26 Yrs

29 Yrs

29 Yrs

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Question 4

Time: 00:00:00

The average age of four boys A,

B, C and D is 5 years and the

average age of A, B, D, E is 6

years. C is 8 years old. The age

of E is (in years)

a) 12

a) 12

b) 13

b) 13

c) 14

c) 14

d) 15

d) 15

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Question 5

Time: 00:00:00
A cricket player after playing
10 tests scored 100 runs in the
11th test. As a result, the av-
erage of his runs is increased
by 5. The present average of
runs is

a) 45

a) 45

b) 40

b) 40

c) 50

c) 50

d) 55

d) 55

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Question 6

Time: 00:00:00
The average of runs scored by a
player in 10 innings is 50. How
many runs should he score in
the 11th innings so that his av-
erage is increased by 2 runs ?

a) 80 runs

a) 80 runs

b) 72 runs

b) 72 runs

c) 60 runs

c) 60 runs

d) 54 runs

d) 54 runs

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Question 7

Time: 00:00:00
The average of 50 numbers is 38. If two numbers, namely 45 and 55 are discarded, the aver-age of the remaining numbers is

a) 37.5

a) 37.5

b) 37.9

b) 37.9

d) 37.0

d) 37.0

37.8

37.8

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Question 8

Time: 00:00:00
The mean of 20 items is 55. If two items 45 and 30 are removed, the new mean of the remaining items is

a) 65.1

a) 65.1

b) 65.3

b) 65.3

c)56.94

c)56.94

d) 56

d) 56

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Question 9

Time: 00:00:00
Of the three numbers, the first is twice the second and the second is 3 times the third. If their average is 100, the largest of the three numbers is :

Let third number be x
Then second number is 3x
And first number is 2*(3x) = 6x

Their average=>
(x+3x+6x) /3= 100

=> 10x = 300
=> x = 300/10
=> x = 30

Therefore, the Largest number is 6x = 6*30= 180

a) 120

a) 120

b) 150

b) 150

c) 180

c) 180

d) 300

d) 300

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Question 10

Time: 00:00:00
The average of first three numbers is thrice the fourth number. If the average of all the four numbers is 5, then find the fourth number.

a) 4.5

a) 4.5

b) 5

b) 5

c) 2.5

c) 2.5

d) 4

d) 4

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

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