Aptitude - Average - Discussion
Discussion Forum : Average - General Questions (Q.No. 13)
13.
A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is:
Answer: Option
Explanation:
Since the month begins with a Sunday, to there will be five Sundays in the month.
| Required average |
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|||||
|
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| = 285 |
Discussion:
29 comments Page 2 of 3.
Steve said:
8 years ago
The average on sundays exceeds the normal day average by= 510-240 = 270,
There are 5 such sundays, so totally we have to adjust = 270 * 5,
Now, this has to be adjusted into all day s of the month = 30 days,
So we have 270 *5 / 30 = 270 / 6 = 45,
If we add this to the original avg we get the answer = 240 + 45 = 285.
There are 5 such sundays, so totally we have to adjust = 270 * 5,
Now, this has to be adjusted into all day s of the month = 30 days,
So we have 270 *5 / 30 = 270 / 6 = 45,
If we add this to the original avg we get the answer = 240 + 45 = 285.
Suhas said:
9 years ago
Exactly right @Abigya & @Srinivas reddy.
Abigya naidu said:
9 years ago
It is given Sunday in question just work for that.
Srinivasa reddy said:
9 years ago
Why should we have to think the month start with Sunday?
If it starts with Thursday then we are only 2 Sundays?
If it starts with Thursday then we are only 2 Sundays?
Engr.Muhammad Ahmed said:
9 years ago
Well done! All people are doing a good job by giving clear explanation. This is a good thing to understand the solution in different ways.
Julie said:
1 decade ago
Please explain me this more clearly anyone.
Chandra said:
10 years ago
In this question it is not clear that first day of month is Sunday so how could we assume that there is five Sunday in this month.
Please enlighten me.
Please enlighten me.
RAJ said:
1 decade ago
Month started with particular day (Sunday, Monday) the month has five week days.
Eg: It starts Sunday in this month we have 5 Sundays.
Ans,
In this give question we have 5 Sunday.
Avg people on Sunday = 510 and normal days = 240.
Difference of avg people on Sunday and normal day = 510 - 240 = 270.
Then 270*5/30 = 45;
Then we have to add this 45 to 240 it gives 285.
540 - 240 = 270.
270*5/30 = 45.
240 + 45 = 285.
Eg: It starts Sunday in this month we have 5 Sundays.
Ans,
In this give question we have 5 Sunday.
Avg people on Sunday = 510 and normal days = 240.
Difference of avg people on Sunday and normal day = 510 - 240 = 270.
Then 270*5/30 = 45;
Then we have to add this 45 to 240 it gives 285.
540 - 240 = 270.
270*5/30 = 45.
240 + 45 = 285.
Teja said:
1 decade ago
@Julie.
In a month we have to find how many Sundays. So for that in a week now that we have 6 days except Sunday.
i.e; 30/6 = 5.
5 means total Sundays in a month.
Then total 30 days 30-5 = 25.
25 is remaining days. So simple.
In a month we have to find how many Sundays. So for that in a week now that we have 6 days except Sunday.
i.e; 30/6 = 5.
5 means total Sundays in a month.
Then total 30 days 30-5 = 25.
25 is remaining days. So simple.
Phanikiran said:
1 decade ago
If month begins with any other day. Then how it will be?
Then 4 Sundays and 26 remaining days for a month right?
So then the count will be 510*4 + 26*240. Is this true?
Then 4 Sundays and 26 remaining days for a month right?
So then the count will be 510*4 + 26*240. Is this true?
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