SOLUTION: Melissa has twice as many pencils as Elle. The difference in pencils is 15. How many pencils does each of the girls have?
Algebra ->
Equations
-> SOLUTION: Melissa has twice as many pencils as Elle. The difference in pencils is 15. How many pencils does each of the girls have?
Log On
Question 821009: Melissa has twice as many pencils as Elle. The difference in pencils is 15. How many pencils does each of the girls have? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Melissa has twice as many pencils as Elle. The difference in pencils is 15. How many pencils does each of the girls have?
------------------------------
Equations:
m = 2e
m-e = 15
----------
Substitute for "m" and solve for "e"::
2e-e = 15
e = 15 (Elle has 15 pencils)
----
Solve for "m":
m = 2e
m = 30 (Melissa has 30 pencils)
------------------------------------
Cheers,
Stan H.
==========================
(