2011-04-11, 11:45 AM
48/2(9+3)
= 48 / 2 * (9+3)
= 48 / 2 * 12
= 24 * 12
= 288
= 48 / 2 * (9+3)
= 48 / 2 * 12
= 24 * 12
= 288

