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With an average speed of 25 Km/hr, a train reaches its destination in time. If it goes at an average speed of 20 Km/hr, it gets late by 1 an hour. Find the length of the total journey.

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Important Questions on Average

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How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 3
In the month of the January of a certain year, the average daily expenditure of an organisation was ₹60. For the first 15 days of the month, the average of daily expenditure was ₹80 and for the last 17 days, ₹50. Find the amount spent by the organisation on the 15thof the month.  
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CAT
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How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 4
One-fifth of the certain journey is covered at the rate of 20 Km/h, one-fourth at the rate of 50 Km/h, and the rest at 55 Km/h. Find the average speed for the whole journey.
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CAT
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How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 5
A batsman makes a score of 40 runs in the 5th innings and thus increases his average by 4. Find the possible value of the new average.
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CAT
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How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 6
Aman can type a sheet in 10 minutes, Baman in 20 minutes and Chaman in 30 minutes. The average numbers of sheet typed per hour per typist for all three typist is.
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CAT
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How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 7
Find the average increase rate (per annum) if the increase in the population in the first year is 10% and that in the second year is 20%.
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CAT
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How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 8
The average income of a person for the first 5 days of a month is ₹ 20, for the next 10 day s it is ₹ 24 for the next 10 days it it ₹ 30 and for the remaining days of the month, it is ₹ 10. Find the average income (in ₹) per day.
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CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 9
In hotel clarks, rooms are numbered from 101 to 150 on the first floor, 201 to 240 on the second floor and 316 to 355 on the third floor. In the month of May 2018, the room occupancy was 50% on the first floor, 50% on the second floor and 30% on the third floor. If it is also known that the room charges are ₹ 2000, ₹ 1000 and ₹ 1500 on each of the floors, then find the average income per room (in ₹ ) for the month May 2017.
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CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 5 - Average>Level of Difficulty>Q 10

A salesman gets a bonus according to the following structure:

If he sells articles worth₹x then he gets a bonus ₹x10-1000. In the month of January, the value of his sales was ₹10000, in February it was ₹12000, from March to November it was ₹30000 for every month and December it was ₹12000. Apart from this, he also receives a basic salary of ₹3000 per month from his employer. Find his average income per month (in ₹) during the year.