SOLUTION: mark missed 1/5 of the questions on the test.he corrected 3/4 of the questions he missed.what fraction of the questions did he miss

Algebra ->  Probability-and-statistics -> SOLUTION: mark missed 1/5 of the questions on the test.he corrected 3/4 of the questions he missed.what fraction of the questions did he miss       Log On


   

Question 390815: mark missed 1/5 of the questions on the test.he corrected 3/4 of the questions he missed.what fraction of the questions did he miss
Found 2 solutions by stanbon, rfer:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Let # of questions be "x".
----
mark missed 1/5 of the questions on the test.
missed: (1/5)x
---
he corrected 3/4 of the questions he missed.
still missed: (1/4)(1/5)x = (1/20) x
-----
what fraction of the questions did he miss?
1/20
============
Cheers,
stan H.

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
1/5*1/4=1/20
----------