Question : A man purchases milk for three consecutive years. In the first year, he purchases milk at the rate of Rs. 7.50 per litre, in the second year at the rate of Rs. 8.00 per litre, and in the third year, at Rs. 8.50 per litre. If he purchases milk worth Rs. 4,080 each year, the average price of milk per litre for the three years is:
Option 1: Rs. 7.68
Option 2: Rs. 7.98
Option 3: Rs. 7.54
Option 4: Rs. 7.83
Correct Answer: Rs. 7.98
Solution :
⇒ Quantity of Milk in Ist year = $\frac{4080}{7.5}$ = 544 ltr
⇒ Quantity of Milk in 2nd year = $\frac{4080}{8}$ = 510 ltr
⇒ Quantity of Milk in 3rd year = $\frac{4080}{8.5}$ = 480 ltr
⇒ Total Milk = 544 + 510 + 480 = 1534 ltr
$\therefore$ Average price in three years = $\frac{4080×3}{1534}$ = Rs. 7.98
Hence, the correct answer is Rs. 7.98.
Related Questions
Know More about
Staff Selection Commission Sub Inspector ...
Application | Eligibility | Selection Process | Result | Cutoff | Admit Card | Preparation Tips
Get Updates BrochureYour Staff Selection Commission Sub Inspector Exam brochure has been successfully mailed to your registered email id “”.




