Aptitude - Average - Discussion
Discussion Forum : Average - General Questions (Q.No. 9)
9.
A car owner buys petrol at Rs.7.50, Rs. 8 and Rs. 8.50 per litre for three successive years. What approximately is the average cost per litre of petrol if he spends Rs. 4000 each year?
Answer: Option
Explanation:
| Total quantity of petrol consumed in 3 years |
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Total amount spent = Rs. (3 x 4000) = Rs. 12000.
 Average cost = Rs. |
 |
12000 x 51 |  |
= Rs. | 6120 | = Rs. 7.98 |
| 76700 | 767 |
Discussion:
92 comments Page 4 of 10.
Swetha S said:
6 months ago
Average cost = 7.50/3 + 8/3 + 8.50/3.
Average cost = 2.50 + 2.66 + 2.83 = 7.99.
Average cost = 2.50 + 2.66 + 2.83 = 7.99.
(51)
Mansingh budha said:
4 years ago
I do not understand this problem. How can I solve it? please solve it again.
(1)
Deeksha said:
4 years ago
Why can't we take the average of cost prices given? Please explain.
(5)
Lalli said:
1 decade ago
Why the 5/18 is divided often, and it can be explained briefly.
Satya said:
7 years ago
It is very easy to understand. Thanks for solving @Krishna.
Mohamed alfaan mirsha said:
6 years ago
I am not getting this, Can anyone explain me in detail?
Karuna said:
1 decade ago
Other than this any other simple calculation is there ?
Gameruler said:
10 years ago
How can we calculate this without using the calculator?
Shubham said:
6 years ago
In this equation,
= 4000(2/15+1/8+2/17),
= 76700/51.
= 4000(2/15+1/8+2/17),
= 76700/51.
Venkat said:
9 years ago
Please solve this equation 4000(2/15 + 1/8 + 2/17) = ?
(1)
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