Posted by chinousa2002@yahoo.com (66.124.165.223) on October 08, 2003 at 02:03:47:
On an algebra tes 39 more pupils passed
than failed. On a new test, 7 who had passed
the first test failed, and one third of those who
failed on the first test passed the second test.
As a result, 31 more passed the second test
than failed it. What was the record of passing
and failing on the first test?