Problema Solution
Jack and Jill each own a collection of mp3 files. Jill has six mp3 files less than three times the number that Jack has. If Jill owns 135 mp3 files, then how many does Jack own?
Answer provided by our tutors
lat jack has = x
jill has = 3x-6
=> 3x - 6 = 135
=> x = 47
jack has = 47