SOLUTION: I have 60 questions correct and I have a 10:2 ratio how many question did I get incorrect ?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: I have 60 questions correct and I have a 10:2 ratio how many question did I get incorrect ?       Log On


   



Question 996382: I have 60 questions correct and I have a 10:2 ratio how many question did I get incorrect ?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
I have 60 questions correct and I have a
10:2 ratio how many question did I get incorrect ?
--------
Let # of questions be "x".
correct:: 60
incorrect:: x-60
-----
Equation:
60/(x-60) = 10/2
------
6/(x-60) = 1/2
------
x-60 = 12
---
x = 72
incorrect:: 72-60 = 12
----------
Cheers,
Stan H.