SOLUTION: Mrs. Boyd has a desk full of quarters and nickels. If she has a total of 29 coins with a total face value of $3.65. How many of the coins are nickels?
Algebra ->
Customizable Word Problem Solvers
-> Misc
-> SOLUTION: Mrs. Boyd has a desk full of quarters and nickels. If she has a total of 29 coins with a total face value of $3.65. How many of the coins are nickels?
Log On
Question 182534: Mrs. Boyd has a desk full of quarters and nickels. If she has a total of 29 coins with a total face value of $3.65. How many of the coins are nickels? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Mrs. Boyd has a desk full of quarters and nickels. If she has a total of 29 coins with a total face value of $3.65. How many of the coins are nickels?
-------------
Equation:
Quantity Eq: n + q = 29
Value Equat: 5n + 25q = 365 cents
--------------------------------
Multiply thru 1st by 25 :
25n + 25q = 25*29
5n + 25q = 365
---------------------
Subtract 2nd from 1st to solve for "n":
20n = 360
n = 18 (# of nickels)
==========================
Cheers,
Stan H.
(