Answer:
146 days.
Step-by-step explanation:
In a recent year, the weather was partly cloudy 2/5 of the days.
We are given that the year had 365 days.
So 2/5 of these 365 days means;
we multiply 2/5 and 365 days:
2/5 × 365 (putting 365 as the numerator and 1 as the denominator still gives the same answer);
×
= 
That gives
partially cloudy days.
Dividing that gives 146 partially cloudy days.