QUOTE(KuLi @ Nov 5 2012, 07:32 AM)
Why, you don't say...
Calculator (yes, even the RM10 ones from pasar malam) has the ability to make calculations easier.
When ppl talk abt percentages, it is always used in relation to a defined value.
It is very silly to talk abt percentage as an absolute.
For example, when the 42 ringgit item is on sale, say 30%, almost all calculators will give the correct answer when user naturally will key in 42 - 30%.
Why wld anybody bother abt 30% being 0.3?
I'm very shocked that Samsung cannot even get their calculator app right.
Instead of sending their ppl to listen to pebble droppings, they shld get the basics right first.
LOL
QUOTE(aspire2oo6 @ Nov 5 2012, 07:34 AM)
tai kor 100 - 10% is also 100 X 0.9 = 90 . Too much calculator is like that. 99.9 is obviously wrong 10% of RM100 is 1 cent? Similar to excel formula it uses this formula to deduct and add percentage and not direct
Yes 0.1 = 10% it depends how u want to calculate it if you want to add 10% is 100 X 1.1 = RM110
And yes my maths sux as well. Lastly yes the calculator is wrong in direct deducting but its correct if you use alternative.
tai kor,
i tried the equation on Casio scientific calculator just now, out of curiosity.
on Casio scientific calculator, 100-10%= 99.9.
10%=10/100=0.1
if u elaborate the equation above, it become 100-10/100. the basics of math, it will do the multiplies or divide first, then the plus and minus. hence, here, the calculator do the divide first, in which 10/100=0.1. then it become 100-0.1= 99.9. isn't that really obvious?
thus, if u want to know how much the amount after you deduct 10% out of Rm100, u should type this on the calculator>> RM100- (10%x100)=RM90; or just simply 10%x100= RM10 then deduct RM100-RM10=Rm90.
never know such simple calculation makes me confuse.