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?
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:
61 comments Page 2 of 7.
Chitti said:
7 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.
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)
BHAGYESH hande said:
7 years ago
Tell Some tricks to solve problems.
Mrunali Ramteke said:
7 years ago
Let the sale of six month is x rs.
Total sale of 5 months is 6435+6927+6855+7230+6562=34009÷5.
But for the sixth month 34009+x÷6=6500 after solving the equation,
= 4991.
Total sale of 5 months is 6435+6927+6855+7230+6562=34009÷5.
But for the sixth month 34009+x÷6=6500 after solving the equation,
= 4991.
Shubham j said:
8 years ago
Thanks @Avinash.
BINIT JHA said:
9 years ago
Solution;
6435+6927+ 6855+ 7230 + 6562+x(let)/6=6500,
34009+x/6=6500,
34009+x=6500*6.
x=39000-34009=4991.
6435+6927+ 6855+ 7230 + 6562+x(let)/6=6500,
34009+x/6=6500,
34009+x=6500*6.
x=39000-34009=4991.
B.Geeth Yeswanth said:
9 years ago
Average=Sum of all observations/no.of observations.
6500=6435+6927+6855+7230+6562+x/6,
6500=34009+x/6,
X=6500*6 -34009,
X=39000-34009,
X=4991.
6500=6435+6927+6855+7230+6562+x/6,
6500=34009+x/6,
X=6500*6 -34009,
X=39000-34009,
X=4991.
Shree said:
9 years ago
Thank you for the detailed explanation. Very useful.
Sazid khan said:
9 years ago
This problem can also be done easily in this way:
Average = sum of observations/no.of observations.
Let the sale in a 6th month be x.
We have avg = 6500., no.of months = 6.
Then, according to the above formula,
6500 = 6435+6927+6855+7230+6562+x/6.
=>6500*6 = 34009+x.
=>x = 39000-34009.
=>x = 4991. Hence, we got the sale in 6th month as RS. 4991.
Average = sum of observations/no.of observations.
Let the sale in a 6th month be x.
We have avg = 6500., no.of months = 6.
Then, according to the above formula,
6500 = 6435+6927+6855+7230+6562+x/6.
=>6500*6 = 34009+x.
=>x = 39000-34009.
=>x = 4991. Hence, we got the sale in 6th month as RS. 4991.
Priya said:
9 years ago
Consider the sale of 6th month=x.
6435+6927+6855+7230+6562+x/6 = 6500
34009+x/6 =6500
34009+x = 39000.
x = 39000-34009.
x = 4891.
6435+6927+6855+7230+6562+x/6 = 6500
34009+x/6 =6500
34009+x = 39000.
x = 39000-34009.
x = 4891.
Hrushi said:
9 years ago
Consecutive months means what?
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