Answer: 14 Quarters and 6 Dimes
Step-by-step explanation:
You write out two equations each with 2 unknown variables
Let x = number of dimes
Let y = number of quarters
Two Equations:
y + x = 20
.25y + .10x = 4.10
Now we have two equations with two unkowns so we can substiture
x = 20-y , now plug x back into your 2nd equation
.25y + .10(20-y) = 4.10
.25y + 2 - .10y = 4.10, now solve for y
.15y = 2.10
y = 14, Plug y into your first equation
x + 14 = 20
x = 6
Final Answer: 14 Quarters and 6 Dimes
