SOLUTION: Mary has a jar with one-dollar bills, half-dollar coins, and quarters valuing $14.00. She has twice as many quarters than she does half-dollar coins and the same amount of half-dol

Question 1026149: Mary has a jar with one-dollar bills, half-dollar coins, and quarters valuing $14.00. She has twice as many quarters than she does half-dollar coins and the same amount of half-dollar coins as one-dollar bills. How many of each does she have?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = number of $1 bills
Let = number of half dollar coins
Let = number of quarters
----------------------------
(1)
(2)
(3)
---------------------------
(3)
(3)
Substitute (1) and (2) into (3)
(3)
(3)
(3)
and
(2)
(2)
and
(1)
(1)
(1)
---------------
She has
7 $1 bills
7 half dollar coins
14 quarters
--------------
check:
(3)
(3)
(3)
(3)
OK
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