Aptitude - Average - Discussion

Discussion Forum : Average - General Questions (Q.No. 3)
3.
A grocer has a sale of Rs. 6435, Rs. 6927, Rs. 6855, Rs. 7230 and Rs. 6562 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 6500?
Rs. 4991
Rs. 5991
Rs. 6001
Rs. 6991
Answer: Option
Explanation:

Total sale for 5 months = Rs. (6435 + 6927 + 6855 + 7230 + 6562) = Rs. 34009.

Required sale = Rs. [ (6500 x 6) - 34009 ]

   = Rs. (39000 - 34009)

   = Rs. 4991.

Video Explanation: https://youtu.be/tP4hszReksU

Discussion:
60 comments Page 2 of 6.

Chitti said:   6 years ago
5 consecutive months sale is 6435+6927+6855+7230+6562=34009.
So Avg of 5 numbers is,
34009%5 = 6,801.8.

Then to get avg sale 6500 in the 6th month.

From the options.
a) 4991--->34009+4991 = 39000.
(39000%6 )= 6500.
(2)

Abdus samadh said:   2 decades ago
Mr. Avinash are you sure 6500-799=4991.
(1)

Dandabata said:   9 years ago
6435+65=6500
6927-427=6500
6855-355=6500
7230-730=6500
6562-62=6500

How this happen?

Sana said:   9 years ago
@Swathy.

x = 5(7+5 = 1+2 = 3).explain this step.

Shirin said:   9 years ago
Thanks for the given explanation.

Vishakha said:   9 years ago
Thank you for the explanation.

Ranjeet said:   9 years ago
@Naveen.

Your trick is awesome. Thanks for giving it.

Karunya said:   9 years ago
Thank you @Naveen.

Harshithakillari79@gmail.com said:   10 years ago
The sum is not 34009, but its 34099.

Chintu said:   10 years ago
You gave a nice and easy explanation. Thanks @Naveen Kumar.


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