The mean of 40 observations was 100

The mean of 40 observations was 100. It was found later that an observation 50 was wrongly taken as 75 The corrected new mean is

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #67410