I need help...
You have $10 in your coin bank. Nickels (n) are worth $0.05, dimes (d) are worth $0.10, and quarters (q) are worth $0.25, each. Which equation represents this situation?

1. 0.05d + 0.10n + 0.25q = 10
2. 0.05n + 0.10d + 0.25q = 10
3. 0.05n + 0.25d + 0.10q = 10
4. 0.05d + 0.10q + 0.25n = 10

When I add each line, I get just nuder 10. So how am I suppose to find it?

Question

I need help...
You have $10 in your coin bank. Nickels (n) are worth $0.05, dimes (d) are worth $0.10, and quarters (q) are worth $0.25, each. Which equation represents this situation?  

1. 0.05d + 0.10n + 0.25q = 10
2. 0.05n + 0.10d + 0.25q = 10
3. 0.05n + 0.25d + 0.10q = 10
4. 0.05d + 0.10q + 0.25n = 10

When I add each line, I get just nuder 10. So how am I suppose to find it?

wolfe8 · Answer

Well all you do is put in the values for d, n and q into each equation and see which one has the RHS and LHS in agreement. What do you mean when you add each like you get under 10?

anonymous · Answer

I use my calc, and do something like 0.10x10

jim_thompson5910 · Answer

Hint: if you have n nickels only, then you'll have 0.05n dollars total

this is because each nickel is worth $0.05

wolfe8 · Answer

Oh I read the question wrong.

anonymous · Answer

Am I doing that right? I'm suppose to end up with 10 aren't I? or am I missreading it?

jim_thompson5910 · Answer

yes because you have $10 in coins

jim_thompson5910 · Answer

that's why each answer choice has 10 on the right side

wolfe8 · Answer

Well the question only asks you to represent the situation with an equation. You don't really get an answer for this. So like Jim said, 10 is the total you want on the RHS. But how many n, d and q does it take to get 10 is what you want to represent.

anonymous · Answer

That is what I thought and that is what I was trying to figure out. :/

jim_thompson5910 · Answer

you don't need to find out the actual values of n, d, q

you just need the equation

anonymous · Answer

well I feel really dumb now

jim_thompson5910 · Answer

I started you off by pointing out that if you have n nickels, then you have 0.05n dollars so far

and you're not dumb

jim_thompson5910 · Answer

you just overthought things, happens all the time

anonymous · Answer

So basically, the answer is 3 right?

jim_thompson5910 · Answer

does "0.25d" look right?

jim_thompson5910 · Answer

if you have d dimes, then you'll have 0.25d dollars??

anonymous · Answer

I meant 2. lol sorry about that

jim_thompson5910 · Answer

that's ok, and yes, the answer is choice #2

anonymous · Answer

Thank you. Sorry for wasting a post on something simple yet overthinkable.

jim_thompson5910 · Answer

it's not a waste and you're welcome