Ted has $3.90. He has only dimes and quarters. He has 27 coins altogether. How many of each does he have

Answer: 8 quarters 19 dimes

Step-by-step explanation:

we already know 8+19=27, if 4 quarters equals a dollar then you use 4 quarters each to create 2 dollars.

then, use 10 dimes to create another dollar summing it up to $3. now all we have to do is make 90 cents, and we've already used 18 coins.

if we used another 9 dimes, that would equal 90 cents.

in conclusion, 4+4 = 8

8+10 = 18

18+9 = 27, and having $3.90