Given
Five friends each ate 2/12 of cake.
Required
we need to find what fraction of cake is left.
Explanation
Here we have
part of cake that each friend ate
[tex]=\frac{2}{12}[/tex]Part of cake eaten by five friends
[tex]5\times\frac{2}{12}=\frac{10}{12}[/tex]Now part of cake left
[tex]\begin{gathered} =1-\frac{10}{12}=\frac{12-10}{12} \\ =\frac{2}{12} \end{gathered}[/tex]So option A is the correct option.
