Bulb cost calculation wrong.

DavyJones61

What is 21 times 13.85p?


according to my calculations using excel it is £2.91
according to Bulb it is £2.96.


Strange!

[Deleted User]

2.1 x 13.85p = 29.085p

Bulbs figure is more accurate as they are using 21 in their calculation and not 2.1

DavyJones61

Bulbs figure is more accurate as they are using 21 in their calculation and not 2.1

OK start again ignoring currency

21 times 13.85 according to excel is 290.85 divide it by 100 gives 2.91 rounded
according to Bulb 21 times 13.85p is £2.96.

Still don't see how Bulb figure is more accurate.

[Deleted User]

Well, yes, now that you've changed the information offered your calculation is more accurate. My post was based on your original post stating that you made 21 x 13.85p = 29.085p.

Now that you've adjusted, your calculations appear more accurate

ianto11

I agree with your £2.91 figure, It's slightly quicker to do 21 x 0.1385, negates the need to divide by 100...but the value is the same.
Have you asked Bulb about their calculation ?

DavyJones61

Have you asked Bulb about there calculation ?

No, not yet.

That was my first bill from them for the 3 days since switching to them.

Still not got my £50, neither has my friend who recommended me.

Just wondering if anyone had an explanation.

DavyJones61

Now that you've adjusted, your calculations appear more accurate

They are more accurate than Bulbs calculations.

ianto11

SSDD23 wrote: »

2.1 x 13.85p = 29.085p

Bulbs figure is more accurate as they are using 21 in their calculation and not 2.1

And the only difference is one is ten fold the other...the only way to improve accuracy is to add decimal places........no ?

bsms1147

Have you got your actual bill? Might show some more detailed workings out.

DavyJones61

Have you got your actual bill? Might show some more detailed workings out.

Yes and no

[Deleted User]

ianto11 wrote: »

And the only difference is one is ten fold the other...the only way to improve accuracy is to add decimal places........no ?

The OP looked like it was querying why his calculation of 21 x 13.85p = 29.085p was showing a different total (naturally) compared to Bulb's figure of closer to £2.90.

It has been edited since I wrote my first response, I was just pointing out why his figure looked so different in the OP.

I do agree his calculation now is accurate vs Bulbs assuming nothing else has been factored into their calculation