Step 1:
"And" in probability means multiplication
Step 2
The probability that they all turn up on Saturday is 0.35
The probability that they all turn up on Sunday is 0.12
Step 3
The probability that they all turn up Saturday and Sunday
[tex]\begin{gathered} \text{= 0.35 }\times0.12 \\ =\text{ 0.042} \\ In\text{ }percentage\text{ } \\ =\text{ 0.042 }\times100\text{ \%} \\ =\text{ 4.2\%} \end{gathered}[/tex]Final answer
4.2 %
