Question 765398
FRUIT JUICE


n for amount of non-real juice
Formula is 11% real juice, 89% non-real juice
{{{11/(11+n)=11}}} and this is a dilution.
Solve for n.




SILVER ALLOY


B = grams of the 55% alloy
E = grams of the  25% alloy

{{{55B+25E=40*112}}}
and
{{{B+E=112}}}


That system can be simplified a bit by dividing the first equation by 5;
{{{11B+5E=8*112}}}
and
{{{B+E=112}}}
Solve the system for B and E.