Question 177857
let n,d,and q represent the number of nickels,dimes,and quarters,respectively
:
d=5q..................eq 1
n=2d..................eq 2
.05n+.1d+.25q=3.25....eq 3
:
re write eq 1 to q=d/5 and take that value and the value of n in eq 2 and plug them into eq 3
:
.05(2d)+.1d+.25(d/5)=3.25
:
.1d+.1d+.25(d/5)=3.25
:
.2d+.25(d/5)=3.25
:
d+.25d=16.25...multiplied all terms by 5 to get rid of fractional terms
:
1.25d=16.25
:
d=13
:
so now you can find out the values of n and q.