Question 13 - 11th Grade Mathematics: Statistics and Probability Practice Test for the SBAC

James is training for the cross-country team. As part of his training he does a set of pushups for a minute every day. Over the past 3 days, he did 43, 40, and 45 pushups in these one-minute sessions.

On the 4th day, what is the minimum number of pushups he must do in order to increase his average?