Answers

2014-11-17T20:31:09+08:00
4 1/2 * 2/3
9/2 * 2/3
18/6
3

3 hours
0
perhaps you've mistaken skirt as shirt.. it should be 4 1/2 * (3/3-2/3) = 1 1/2 hr
question why multiply? its supposed to be only using add or sub
Comment has been deleted
yes its correct
oh wait nvm