Verified Answer :

\(\begin{array}{ccc}30\ students&-&9\ pizzas\\\\40\ students&-&x\ pizzas\end{array}\ \ \ \ |cross\ multiply\\\\\\30\cdot x=40\cdot9\\30x=360\ \ \ \ \ |divide\ both\ sides\ by\ 30\\\boxed{x=12}\leftarrow answer\)

AhmetÖzkan1907

Your answer is in the attachment ...

Good Luck .

View image AhmetÖzkan1907

Related Questions