Question 281525
{{{p}}}=Plastic cups
{{{c}}}=ceramic cups
{{{p+c=400}}}
{{{3.50p+4c=1458}}}
u can use substitution or elimination method
i will use elimination method as it is easy and faster
{{{p+c=400}}} multiply by a -3.50
{{{-3.50p-3.50c=-1400}}}
{{{3.50p+4c=1458}}} add them together
{{{0.5c=58}}}
{{{c=116}}}
{{{3.5(116)=highlight(406)}}} dollars of ceramic cups
{{{p+c=400}}}
{{{p+116=400}}}
{{{p=284}}}
{{{4(284)=highlight(1136)}}} dollars of plasitic cups