QUOTE(tbheng @ Apr 18 2014, 10:34 PM)

You see... petrol and mobile can be easily control to go for RMxx5, but for grocery, it is cumbersome to calculate while you are on the trolley. So I just let go the grocery category. Sometime it is RMxx4, so get not so good CB %.
Then for last January, my grocery category did end with RM5, so strike the highest CB %.
If want to monitor to hit RMxx5 for grocery will burnt too much of my brain cell lah...

always prepare to buy mentos.
if end with rm0 = add 4-5 mentos.
if end with rm1 = add 3-4 mentos.
if end with rm2 = add 2-3 mentos.
if end with rm3 = add 1-2 mentos.
if end with rm4 = add 1 mentos.
if end with rm5 = perfect.
if end with rm6 = nevermind or add 8-9 mentos.
if end with rm7 = nevermind or add 7-8 mentos.
if end with rm8 = nevermind or add 6-7 mentos.
if end with rm9 = nevermind or add 5-6 mentos.