Originally posted by tempfile:
[b]assume 'z' is total saving in his bank
account,
z = z(3/5) + z(2/5) ----- rite?
"After spending 1/3 of
it, he had $60 left"
---SO, u can play around with that $60, and also the 3/5 of
the total saving
...
$60 = [z(3/5)] - [ 1/3 x z(3/5) ]
$60 = [z(3/5)] - [ z(3/15) ]
$60 = z (3/5 - 3/15)
$60 = z (9/15 - 3/15)
$60 = z(6/15)
z = $60 x 15/6
z = $150
.[/b]
eh..algebra only gd for some real difficult qns..this one not
so..so try not use it? 
