IIMB 2002 (QA) PYQs

While selling $15$ items, a shopkeeper earned a profit equal to the total cost price of $3$ items. If each item is marked $25\%$ above its actual cost and a discount of $₹2$ is given while selling it, then what is the difference between the total cost price of $20$ items and the total selling price of $12$ items?

Alex bought a refrigerator and got a discount of $18.5\%.$ Had there been a $24\%$ discount, he could have saved an additional $1650.$ How much did he pay for mobile?

A pen was sold for a certain sum and there was a loss of 20% . Had it been sold for Rs. 10 more, there would have been a loss of 10%. What would be the profit if pen were sold for Rs. 20 more than what it was sold for?