Question

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

Answer 1

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