A shopkeeper buys some notebooks at the rate of 12 for ₹222, and an equal number of notebooks at 10 for ₹225. If he sells all the notebooks at a profit of 20%, then the selling price of 15 notebooks is:
Answer & explanation
Correct answer: option 2
Profit % = 20%
5 × 12 = 60 = 222 × 5 = Rs.1110
6 × 10 = 60 = 225 × 6 = Rs.1350
Total number of Notebook = 120
Total cost price of all Notebook = 1110 + 1350 = Rs.2460
Let the SP = x
20 = \(\frac{x - 2460}{2460}\) × 100
SP = x = 2952
Selling price of 1 Notebook = \(\frac{2952}{120}\) = Rs.24.6
Selling price of 15 Notebook = 24.6 × 15 = Rs.369