Jawapan

2015-09-08T19:19:56+08:00
Ibu = 1/5 = 20%
Belanja = 40%
Baki = 100 - 40 - 20 = 40%

Gaji + Kenaikan 20% = RM600 X 100 /40 = RM1500

Gaji asal = RM1500 X 100 / 120 = RM1250