Klaus purchases $x$ silver balloons and $y$ gold balloons for a party. He gets more gold balloons than silver balloons, at least 15 silver balloons, fewer than 50 gold balloons, and in total no more than 70 balloons.
(a)[4]
State four inequalities, in terms of $x$ and/or $y$, to represent this information.
(b)[5]
On the grid, represent the information from part (a) by drawing four straight lines and shading the regions that are not needed.
(c)[2]
Calculate the maximum amount Klaus could spend.
Worked solution & mark scheme
This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$y>x$” …