You save dimes and quarters in a cup in your locker. When you count them, you find that you have 20 coins with a value of $3.20. How many of each type of coin do you have?
A. d + q = 3.20
d + q = 20
B. d + q = 3.20
q - d = 20
C. d + q = 20
.35(d + q) = 3.20
D. d + q = 20
.10d + .25q = 3.20

Question

You save dimes and quarters in a cup in your locker. When you count them, you find that you have 20 coins with a value of $3.20. How many of each type of coin do you have?
	A.	d + q = 3.20
d + q = 20
	B.	d + q = 3.20
q - d = 20
	C.	d + q = 20
.35(d + q) = 3.20
	D.	d + q = 20
.10d + .25q = 3.20

anonymous · Answer

@chancehenninger Any idea to start with?

anonymous · Answer

no freakin clue

anonymous · Answer

" 20 coins "
     d   +   q    =  20 coins

anonymous · Answer

Can you make a wild guess with total of dime and quarters " value of $3.20"

anonymous · Answer

so its d? because a dime = .10 and a quarter = .25

anonymous · Answer

Learn it's essential concept for your own good :)