FACTS  AND  FORMULAE  FOR  AVERAGE QUESTIONS

 

 

1. Average =Sum of observationsNo. of observations

2. Suppose a man covers a certain distance x kmph and an equal distance at y kmph. Then, the average speed during the whole journey is2xyx+yKmph

Q:

What is the average of all numbers between 9 and 90 which are divisible by 8?

A) 53 B) 52
C) 51 D) 50
 
Answer & Explanation Answer: B) 52

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1 1955
Q:

Average of all even numbers between 104 and 148 is __________.

A) 128 B) 130
C) 124 D) 126
 
Answer & Explanation Answer: D) 126

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2 1953
Q:

What is the average of all numbers between 100 and 200 which are divisible by 13?

A) 147.5 B) 145.5
C) 143.5 D) 149.5
 
Answer & Explanation Answer: D) 149.5

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0 1936
Q:

The average weight of 10 parcels is 1.7 kg. Addition of another new parcel reduces the average weight by 60 gram. What is the weight , in kg, of the new parcel?

A) 1.04 B) 1.08
C) 1.4 D) 1.8
 
Answer & Explanation Answer: A) 1.04

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2 1930
Q:

In the first 38 overs of a cricket match, the run rate was 4.5 runs/over. Calculate the required run rate in the remaining 12 overs to reach the target of 288 runs?

A) 10.35 B) 10.95
C) 9.75 D) 9.15
 
Answer & Explanation Answer: C) 9.75

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2 1927
Q:

In the first 40 overs of a 50 over innings, the run rate was 4.8 runs/over. What is the required run rate in the remaining 10 overs to reach the target of 241 runs?

A) 6.7 B) 6.5
C) 6.3 D) 4.9
 
Answer & Explanation Answer: D) 4.9

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1 1914
Q:

The average marks obtained by a class of 60 students is 65. The average marks of half of the students is found to be 85. The average marks of the remaining students is

A) 35 B) 45
C) 55 D) 65
 
Answer & Explanation Answer: B) 45

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1 1912
Q:

The average of four consecutive odd numbers is 64. What is the value of largest number?

A) 65 B) 69
C) 71 D) 67
 
Answer & Explanation Answer: D) 67

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0 1911