Reasoning
There are 140 days between the two dates, and these 140 days are split in the following way:
4 x Answer | 50 days | Answer
We already know about 50 days, so we have to split the remaining 90 days into the ratio 4:1, which is 72:18.
72 days | 50 days | 18 days
Note: BrainBashers has a Dark Mode option. For BrainBashers, I'd recommend not using your browser's built-in dark mode, or any dark mode extensions (sometimes you can add an exception for a specific website).
