Just wanna ask as a general tip, for a 715+ score, how much should I be concerned with the 805+ questions, i don’t answer correctly or within like 2:30-3 min mark?
RBgmatPre

Difficulty wise this question may be easy, but how do you quickly do the calculations in this type of questions - It took me over 3 minute to solve this question; let me know if you are able to solve it under 2 minutes
This is still a fairly straightforward question, with calculations only being required in the 1st part, using the provided calculator.
I personally like looking at the options in these graph questions in case they can help me narrow out the work especially for Q2 here