Magen has $1.10 in dimes nickels, and pennies. She has three times as many nickels pas pennies and the number of dimes is two less than the number of pennies. how many nickels and pennies do I have

We define the variables:

x = dimes

y = nickels

z = pennies

We write the system of equations:

0.1x + 0.05y + 0.01z = 1.10

y = 3z

x = z-2

Solving the system of equations we have:

x = 3

y = 15

z = 5

Answer:

The number of nickels and pennies is:

nickels = 15

pennies = 5