Final answer:
Megha bought 10 notebooks for 40 and sold them at 4.75 each, resulting in a total selling price of 47.5. She made a profit of 7.5, which is an 18.75% gain on her original investment.
Step-by-step explanation:
Megha bought 10 notebooks for a total of 40 units of her local currency and sold them at 4.75 per notebook. To calculate her gain percent, we first find the total selling price and then calculate the profit. The total selling price for all 10 notebooks is 10 notebooks × 4.75 per notebook, which equals 47.5. The profit is the selling price minus the cost price, so the profit is 47.5 - 40, which equals 7.5. The gain percent is the profit divided by the cost price, then multiplied by 100 to get a percentage. Therefore, the gain percent is (7.5 / 40) × 100, which equals 18.75%. Megha's gain percent from the transaction is 18.75%.