If the probability of it raining on a given day of the weekend is 0.3. What's the probability that it rains on both Saturday and sunday?

Can someone help me with Maths?

Hi im help with one question and im stuck on it (there is a boy who bought 3 shirts and 1 hat and there is a girl who bought 1 shirt and 2 hats the girl jade to cost 80 pound and the boy hade to pay 120 pound how much 1 shirt costs

How do I do this? x is directly proportional to z when x is 10, z is 15 find a formula connecting x and z x = ??