CAT (QA) PYQs

In a market, the price of medium quality mangoes is half that of good mangoes. A shopkeeper buys $80 \mathrm{~kg}$ good mangoes and $40 \mathrm{~kg}$ medium quality mangoes from the market and then sells all these at a common price which is $10 \%$ less than the price at which he bought the good ones. His overall profit is

If Fatima sells $60$ identical toys at a $40\%$ discount on the printed price, then she makes $20\%$ profit. Ten of these toys are destroyed in a fire. While selling the rest, how much discount$\%$ should be given on the printed price so that she can make the same amount of profit?

Minu purchases a pair of sunglasses at Rs. $1000$ and sells to Kanu at $20 \%$ profit. Then, Kanu sells it back to Minu at $20 \%$ loss. Finally, Minu sells the same pair of sunglasses to Tanu. If the total profit made by Minu from all her transactions is Rs. $500$, then the percentage of profit made by Minu when she sold the pair of sunglasses to Tanu is