Given that the total income was $150 by selling 'x' sundaes and 'y' banana splits,
![\begin{gathered} \text{Total Cost}=\text{ Cost per sundae}\cdot\text{ Number of sundae}+\text{ Cost per banana splits}\cdot\text{ Number of banana splits} \\ 150=2x+3y \\ 2x+3y=150\ldots(1) \end{gathered}]()
Also given that the number of sundaes sold is 5 times more than the number of banana splits sold,

Substitute this value in equation (1),

The corresponding value of 'x' is calculated by using equation (2) as,

Thus, the solution to the system of problem