Bob has 5 more dimes than quarters. He has $3.30. How many of each coins does he have.

Question

saifoo.khan · Answer

i did one before!

anonymous · Answer

On my other question? Its not appearing.

saifoo.khan · Answer

He got 13 dimes, and 8 quatrers!

anonymous · Answer

And how did you get to that?

anonymous · Answer

He has 13 dimes, and 8 quarters.

anonymous · Answer

And someone else already answered....

saifoo.khan · Answer

Lol, and someone copied!
jk jk

anonymous · Answer

Haha but how did you get to your answer ?

saifoo.khan · Answer

$$\Huge My-Mind-works!$$

saifoo.khan · Answer

$$means..... \Huge Mentally!$$

anonymous · Answer

this doesnt help much. lol

anonymous · Answer

I got to my answer by just being intuitive. Meaning I just thought about it and even counted on my fingers lol. Then I got my answer.

anonymous · Answer

It can be solved with algebra. Number of quarters = q and number of dimes = d. We have, from the question:

d = q+5 (there are five more dimes than quarters), and
10d + 25q = 330 (total amount of money = $3.30, or 330 cents) 

Putting them together:

10(q+5) +25q = 330
35q + 50 = 330
35q = 280

Therefore q=8, and d=13, as stated above.