SOLUTION: The ratio of Ed's car was 5:2 at first. After Ed gave 30 cars to Pete, they each owned an equal amount of cars. How many cars did they have altogether. I solve the problem but t

Question 220655: The ratio of Ed's car was 5:2 at first. After Ed gave 30 cars to Pete, they each owned an equal amount of cars. How many cars did they have altogether.
I solve the problem but the answer seem wrong when I retest. here is my equation:
5:2
5x - 30= 2x (because Ed gave 30 cars to P : 5x-30)
5x -2x = 30
3x= 30
x= 10
Then I retest x=10 but the number was wrong 50:20 but Ed gave 30 cars to Pete.
Please help,. Thank you so much. Brian.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The ratio of Ed's car was 5:2 at first. After Ed gave 30 cars to Pete, they each owned an equal amount of cars. How many cars did they have altogether.
I solve the problem but the answer seem wrong when I retest. here is my equation:
5:2
5x - 30= 2x (because Ed gave 30 cars to P : 5x-30)
5x -2x = 30
3x= 30
x= 10
Then I retest x=10 but the number was wrong 50:20 but Ed gave 30 cars to Pete.
---------------------
===========================
=============================
5:2
5x-30 = 2x+30
3x = 60
x = 20
------------
Ed had 5*20 = 100 cars
Pete had 2*20 = 40 cars
============================
Cheers,
Stan H.
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