It's a weighted average:

((330.0 mL x 25.00 °C) + (100.0 mL x 95.00 °C)) / (330.0 mL + 100.0 mL) = 41.28 °C

The volume ratio is 10:33

Over the temperature range (95 - 25 = 70) we need to apply this ratio.

Hence

10 + 33 = 43

70 /43 = 1.6279 ( 1 ratio)

Hence 10 ratios is 16.279

& 33 ratios is 53.720

Hence water temperature rises by 25 + 16.28 = 41.28 degrees

Or fall by 95 - 53.72 = 41.27 degrees.

Hence final temperature of water is 41.27 degrees C