Question
A man purchased spirit for three consecutive years. In
the first year, he purchased spirit at the rate of Rs. 5 per litre, in the second year, at the rate of Rs. 6.00 per litre and in the third year, at Rs. 7.50 per litre. If he purchased spirit worth Rs. 7,500 each year, the average price of spirit per litre for three years is.Solution
Quantity of purchased spirit in 1st year = 7500/5 = 1500 litre 2nd year = 7500/6 =1250 litre and 3rd year = 7500/7.5 = 1000 litre ∴ Total quantity purchased in 3 years = 1500 + 1250 + 1000 = 3750 litre and Total amt. paid in 3 yrs for spirit = 3 × 7500 = Rs.22,500 ∴ Average price per litre = 22500/3750 = Rs. 6 per litre
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