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.
Ravi said:
1 decade ago
Thanks krishna.
Surya said:
4 years ago
Thanks @Krishna.
Karuna said:
1 decade ago
Other than this any other simple calculation is there ?
Saikumar said:
1 decade ago
Thanks krish.
Longanathan said:
1 decade ago
Thanks Krish, that was simple and sound.
Sagar said:
5 years ago
Thanks @Krishna.
Sunil yadav said:
5 years ago
Thanks @Krishna.
Sai said:
5 years ago
Thanks @Krishna.
Chippey said:
1 decade ago
After taking 4000 as common it is left with.
4000[1/7.50 + 1/8 + 1/8.50].
1/7.50 can be written as 100/750 which is equal to 2/15.
Similarly 1/8.50 can be written as 100/850 which is equal to 2/17.
4000[1/7.50 + 1/8 + 1/8.50].
1/7.50 can be written as 100/750 which is equal to 2/15.
Similarly 1/8.50 can be written as 100/850 which is equal to 2/17.
Subhasmita said:
10 years ago
Please solve this equation 4000(2/15+1/8+2/17) = ?
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