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:
93 comments Page 4 of 10.
Mani said:
9 years ago
Answer is very simple when cost is equal in all year, the unit of cost should be average.
Ganesh said:
9 years ago
Thanks @Krishna.
Swapn said:
9 years ago
It's a difficult calculation done here
Md. Sah-alam said:
7 years ago
Approximate cost should be 8.
Pratik said:
9 years ago
Thanks for the given explanations.
Mizanur Rahman said:
9 years ago
Thanks @Krishna.
Shanmukh Adari said:
8 years ago
It was so useful, thanks for the answer @M.V.Krishna.
Satya said:
8 years ago
It is very easy to understand. Thanks for solving @Krishna.
Shivani Sharma said:
7 years ago
Thanks @Krishna.
Dokuparthi Brahmam said:
7 years ago
Thanks @Krishna.
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