Question

A piggy bank contains $5.45 in dimes and quarters. If the bank contains 29 coins, how many quarters are in the bank?


12 quarters
17 quarters
21 quarters

21 ??

Answer 1

oops
21 x 0.25 gives us $5.25
We still have 8 coins..which are dimes. That gives us $6.05.. too much.
Try another answer.

Answer 2

.25q +.10d = 5.25
d+q = 29
solve

Answer 3

So theres 1 approach if you hate algebra.. and another if youre ok with algebra

Answer 4

so 17 then ??

Answer 5

??