Question 880993: rebecca has a 20 coin consisting of quarters and dimes. if she has a total of $3.20 how many dimes and quarters does she have? Answer by JulietG(1812) (Show Source):
You can put this solution on YOUR website! If all 20 coins were dimes, she would have $2.00
She has $1.20 more than this. A quarter is .15 more than a dime.
$1.20 / .15 = 8
8 of the coins are quarters. 8*.25 = 2.00
That leave 12 coins as dimes. 12*.10 = 1.20
2.00 + 1.20 = $3.20
