Question 795376
1 nickel = 5cents
1 dime = 10cents
1 quarter = 25 cents
$10.25 = 1025 cents

x+y+z = 85 -----> eq1
5x+10y+25z = 1025 ----> eq2
y=2z

putting y=2z in eq 1
x+2z+z=85
x+3z=85
x=85-3z

putting x=85-3z & y=2z in eq 2
5(85-3z)+10(2z)+25z=1025
425-15z+20z+25z=1025
30z=1025-425
30z=600
{{{ z=600/30 }}}
z=20

y=2z=2(20)=40

x=85-3z=85-3(20)=25