Posted by Mickaela on Monday, September 26, 2011 at 10:04pm.
Kelly has twice as many CDs as Lou. Tiffany has three times as many CDs as Lou. Altogether they have 372 CDs. How many more CDs does Tiffany have than Lou?

Mathematics  Steve, Tuesday, September 27, 2011 at 2:29pm
K=2L
T=3L
L+K+T = 372
L + 2L + 3L = 6L = 372
L = 62
K = 124
T = 186
TL = 124