https://www.gregmat.com/problems/quant?problem=a-website-currently-has-a-bank-of-770-questions
How to solve this in 1 to 2 minutes if it popped up in the exam. The solution part seems to be something that can take up to 5 minutes.
It’s just one equation, so it shouldn’t take 5 minutes. Have you tried anything so far? Maybe we can work out a solution based on that.