A tradesman marks his goods 25% above the cost price and allows a 10% discount for cash payment. If he earns a profit of Rs. 50, what is the cost price? MCQ with Answer and Explanation

Explanation:
Let Selling Price = 100. Profit = 25. Cost Price = 100 - 25 = 75. Profit percentage = (25 / 75) * 100 = 33.33%.

Explanation:
Total Cost Price = 6000. Desired Selling Price for 20% profit = 6000 * 1.20 = 7200. Cost Price of one-third = 2000. Selling Price of this part = 2000 * 1.10 = 2200. Remaining Cost Price = 4000. Required Selling Price for remaining = 7200 - 2200 = 5000. Profit on remaining = 5000 - 4000 = 1000. Profit percentage = (1000 / 4000) * 100 = 25%.

Explanation:
Let initial Cost Price = 100x. Initial Selling Price = 115x. New Cost Price = 90x. New Selling Price = 90x * 1.25 = 112.5x. Difference = 115x - 112.5x = 2.5x. 2.5x = 4. x = 1.6. Cost Price = 100 * 1.6 = 160.