EASY
CAT
IMPORTANT
Earn 100

The average age of 5 persons in a group is increased by 10 years when two men aged 30 years and 40 years are substituted by two women. Find the average age (in years) of the two women.

50% studentsanswered this correctly

Important Questions on Average

EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 19
The average temperature for Wednesday, Thursday and Friday was 20°C. The average for Thursday, Friday and Saturday was 21°C. If the temperature on Saturday was 22°C, what was the temperature on Wednesday?
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 20
The speed of the train in going from Kanpur to Lucknow is 60km/hr while when coming back from Lucknow to Kanpur, its speed is 40 km/hr. Find the average speed (in km/hr) during the whole journey.
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 21
The average weight of class of 19 students is 20 kg. If the weight of the teacher be included, the average rises by 1 kg. What is the weight of the teacher?
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 22
The average of 3 numbers is 20 and that of the first two is 25. Find the third number.
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 23
The average weight of 29 men in a ship is increased by 5 kg when one of the men, who weighs 120 kg, is replaced by a new man. Find the weight of the new man (in kg).
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 24
The age of A and B is the ratio 1:3. After 10 years, the ratio of their ages will become 1:2. Find the average of their ages after 20 years.
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 25
Find the average of the first 100 natural numbers.
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 26

Find the average of all prime numbers between 20 and 50.