Luana saw her Grandma last Saturday. If today is the Thursday the 3rd of March, on what date did she see her Grandma?
Solution:
If today is a Thursday and Luana saw her Grandma last Saturday then she saw her five days ago.
You need to find the date five days before the 3rd of March. Three days before the 3rd of March would have been the last day of February. February has 28 days (or 29 on a leap year) so three days ago was either the 28th or 29th of February.
Luana saw her Grandma two days before that, on either the 26th or 27th of February (depending on whether it is a leap year).