lxwxh = v 2 x 2 x 2 = 8 7x8=56 Answer: 7
Usually I just use slope calculator hope that helps
$315, i cant give a thorough explanation since i did it all in my head but basically amal gets 5 portions of the money and Salma gets 9, meaning she gets 4 more, so if 4 portions is $252 then it cant be any of the others since they are too low or way too high, $315 is the only reasonable one.
The discount price would be $21.98
The final price would be $124.56
yw, mwah