Answer:
20%
Explanation:
Let A is the event of raining on Saturday and B is the event of raining on Sunday,
According to the question,
P(A) = 50% = 0.50,
P(B) = 40% = 0.40,
Thus, the probability of raining in both days,
( ∵ events A and B are independent i.e. the chance of raining on Sunday does not effect by raining on Saturday or vice versa ),
By substituting the values,

Hence, FIRST OPTION is correct.