could you help me with this math problem?!?
Set up and solve a system of equations for each problem. Clearly identify what each variable is representing.
1. A collection of 84 quarters and dimes is worth $15.30. How many of each type pf coin are there?
- DavidLv 71 decade agoFavorite Answer
let x= number of dimes
let y= number of quarters
- 1 decade ago
so we know the following two equations...
.25x+.10y = 15.30
x = quarters, y = dimes
multiply the bottom equation by .1 and subtract the two equations to get:
.15x=6.9 which x=46
plug x into the second equation and y = 38