Madelyn has a total of 15 dimes and quartets in her piggy bank. The total amount of money in her piggie bank is $2.85. Write and solve a system of equations to determine the number of dimes and the number of quarters in madelyn’s piggie bank.

Respuesta :

Answer:

0.19

Step-by-step explanation:

You do 2.85 divided by 15, and you do it with most of this type of equation. But get rid of the dollar sign and keep the dot

System of equation
(d + q = 15)0.10
0.10d + 0.25q = 2.85
0.10d + 0.10q = 1.50
Subtract both equation
0.15q = 1.35, q = 9
15 - 9 = 6
Solution: 9 quarters and 6 dimes