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 is made by minu from all the transactions is rs 500, then the percentage of profit made by minu when she sold the pair of sunglasses to tanu is

Hi Kunj, Here is a video solution for your question: https://cracku.in/11-minu-purchases-a-pair-of-sunglasses-at-rs1000-and--x-cat-2023-slot-2-quant

31.25 percent?

cp of minu =1000 profit of minu =20% (1+20/100)*1000= 6/5*1000=1200 rupees kanu sells it back to minu at 20%loss that means 4/5*1200=960 again minu sells sunglasses to tanu where total profit for minu is 500 we know from first transaction profit is 1200-1000=200 so we need excess 300 profit so x/100*960=300 24x/25=300 therefore x=300*25/24=31.25% profit percentage made by minu is 31.25% hope it helps