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 6 of 10.
Akashay said:
9 years ago
Is there any shortcut to solve this problem?
Jeevan said:
8 years ago
Nice, thanks for the explanation @Arvind.
Longanathan said:
1 decade ago
Thanks Krish, that was simple and sound.
Swapn said:
8 years ago
It's a difficult calculation done here
Jyoti said:
3 years ago
Thank you for explaining @Arvind Sahu.
(3)
Nitin said:
1 decade ago
Thnks krishna your result is so easy.
Iswarya said:
1 decade ago
Hey thank you krishna that was usful.
Swaroopa said:
9 years ago
Thank you all for the explanation.
Pratik said:
8 years ago
Thanks for the given explanations.
Varma said:
9 years ago
Why take 7.50 + 8 + 8.50 / 3 = 8?
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