<PRE><B>Question 1061226</B>
VARIABLES
n nickels
d dimes
q quarters


EQUATIONS FROM DESCRIPTION
{{{system(d/n=2,q-n=10,0.05n+0.1d+0.25q=7.5)}}}



SIMPLIFY OR IMPROVE THE SYSTEM
{{{system(d=2n,n-q=-10,n+2d+5q=150)}}}
Actual form of each equation may be chosen differently, but system must still be equivalent.


SUGGESTION:
substitute for d in the last equation of that simplified system, and solve the resulting system in n and q.</PRE>