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A train travels 12 km in the first quarter of an hour, 15 km in the second quarter and 30 km in the third quarter. Find the average speed of the train per hour over the entire journey.

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Important Questions on Average

EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 47
The average weight of 6 men is 58.5 kg. If it is known that Ram and Tram weigh 65 kg each, find the average weight of the others.
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 48
The average score of a class of 30 students is 56. What will be the average score of the rest of the students if the average socre of 10 of the students is 59.
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 49
The average age of 60 students of IIM, Bangalore of the 2005 batch is 23 years. What will be the new average if we include the 40 faculty members whose average age is 35 years?
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 50
Out of three numbers, the first is twice the second and three times the third. The average of the three numbers is 132. The smallest number is
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 51
The sum of three numbers is 147. If the ratio between the first and second is 2:3 and that between the second and the third is 5:8, then the second number is
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 52
The average height of 40 girls out of a class of 50 is 150 cm and that of the remaining girls is 155 cm. The average height of the whole class is
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 53
The average weight of 6 persons is increased by 1.5 kg when one of them, whose weight is 60 kg is replaced by a new man. The weight of the new man is
EASY
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 54
The average age of three boys is 24 years. If their ages are in the ratio 2:5:5 then the age of the youngest boy is