Question 709176
This is both a cost and a mixture problem.  Account for the money and account for the quantity of materials.  The information about the almonds in the mixed nuts is not enough to allow any better analysis or account, so not certain if the problem description is or is not incomplete.


Choose some variables.
m for pounds of mixed nuts
c for pounds of cashews


What happens with the money?  We only have enough information to assume the given selling prices are the prices determining those parts for the mixture.
SYSTEM TO SOLVE
{{{4.00m+2.50c=2.95}}}
{{{m+c=10}}}


A way to continue may be multiply both sides of the pounds equation by 2.5, and subtract from the money equation; you could then quickly get a value for m.

{{{4m+2.5c-(2.5m+2.5c)=2.95-2.5*10}}}
..
Can you continue from here?