Question 314089
let dimes be x 
nickels = x-5
quarters = 2x
..
Value of the coins 
10x+5(x-5)+25*2x=950 cents
10x+5x-25+50x = 950
65x=975
x=975/65
x=15  dimes
nickels = x-5 = 10
quarters = 2x = 30