SOLUTION: A company places a total of 450 advertisements using radio and television. The number of radio ads is twice the number of television ads. Find the number of radio ads and the numbe

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A company places a total of 450 advertisements using radio and television. The number of radio ads is twice the number of television ads. Find the number of radio ads and the numbe      Log On


   

Question 1027988: A company places a total of 450 advertisements using radio and television. The number of radio ads is twice the number of television ads. Find the number of radio ads and the number of television ads.
I began with assigning radio to x
and assigning television to y
x+y = 450
x=2y
Sorry I think writing and typing this darn thing out helped with my comprehension. I think I am on the right track?
Found 3 solutions by Fombitz, Alan3354, rothauserc:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Yes, keep going.
Substitute eq. 2 into eq. 1 and solve for y.
Then use either equation to solve for x.
%282y%29%2By=450

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A company places a total of 450 advertisements using radio and television. The number of radio ads is twice the number of television ads. Find the number of radio ads and the number of television ads.
I began with assigning radio to x
and assigning television to y
x+y = 450
x=2y
-----------
Sub for x in the 1st equation
2y + y = 450
3y = 450
y = 150
----------
x = 2y
x = 300

Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
you are correct, then substitute for x in first equation
:
2y + y = 450:
:
3y = 450
:
y = 150 and
x = 300
: