Jawapan

2016-03-12T18:51:59+08:00
40 * 45/100 =
40 * (100-45) (People Left)/100 =
40 * 55/100 =
2200/100 = Simplify
22


2016-03-12T19:37:31+08:00
100/100 – 45/100 = 55/100
55/100 × 40 = 22