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Question
Last year, oranges were available at Rs. 24 per dozen; but this year, they are available at Rs. 50 per score. Find the percentage change in the price of oranges.
Solution
Price of 1 orange = `(24)/(12)` = Rs.2
New price = `(50)/(20)` = Rs.2.50 ...[∵ 1 score = 20]
Increase in price = Rs.2.5 - Rs.2.0 = Rs. 0.50
∴ % Change in price (increase)
= `(0.50)/(2) xx 100 = 0.50 x 50 = 25%`
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