Correct Answer - Option 3 : 35
Concept:
The relation between mean, mode and median is following:
Mean - Mode = 3(Mean - median)
Calculation:
Given Mean = 40 and Mode = 25
As, Mean - Mode = 3(Mean - Median)
40 - 25 = 3 (40 - Median)
15 = 3 (40 - Median)
5 = 40 - Median
Median = 35