Question 548721
Newgy has twice as many nickels as dimes and four times as many pennies as nickels. if she has a total of $2.80, how many of each coin does she have ?
----
Let # of dimes be "x":
Then # of nickels is "2x":
And # of pennies is "8x":

------
Equation:
10x + 5(2x) + 8x = 280 cents
28x = 280
x = 10 (# of dimes)
2x = 20 (# of nickels)
8x = 80 (# of pennies)
===========================
Cheers,
Stan H.
============