You have $1.00 in dimes and nickels. You have twice as many dimes as nickels. What would the associated system of equations look like in augmented matrix form?

Answer 1

number of nickels --- x
number of dimes ---- y

first equation: 5x+10y = 100
x + 2y = 20 <----- #1

second equation: x = 2y
x - 2y = 0 <----- #2

I assume you know how to form the matrix from these two equations