Malaysia- The discount math

you can always see all kinds of discount offers here, excluding those direct discount promotion, here are some discount terms you might be confused with:

1. second item 50%

let's say you the first item is 100RM, the second is also 100RM. you will end up to pay 150RM for the two which are worthy 200RM, therefore you get (1-150/200)=25%, and that's the maximum amount you can get.

if you buy two items with different price, the 50% discount will be on the cheaper item. let's say, the first item is still 100RM, the second one is 80RM, you will end up to pay 140RM for 180RM, so you get (1-140/180)=22.22% which is lesser than 25%

2. pay 100RM, then you can enjoy 130RM purchase

this one is not 30% discount, it's 1-100/130=23% discount. because you take out 100RM from your pocket to buy a 130RM goods, you save 30RM on 130RM, not on 100RM

to be continued..