# HELP!!!

philreddy1985
Registered Posts:

**23**
Hello,

I'm wondering if someone could please offer me some assistance when working out interpolation equations.

10% + 5510/14080 x 10 =

I just cant seem to get 13.9% or 14% when I work this out with a calculator. is there something I am missing out or am I just not working it out correctly?

Any help or assistance will be greatly appreciated

I'm wondering if someone could please offer me some assistance when working out interpolation equations.

10% + 5510/14080 x 10 =

**13.9 - 14 %**I just cant seem to get 13.9% or 14% when I work this out with a calculator. is there something I am missing out or am I just not working it out correctly?

Any help or assistance will be greatly appreciated

## Comments

32Division and multiplication first:

(5510/14080) = 0.39134

0.39134 x 10 = 3.9 (to 1 d.p)

Followed by addition:

10+3.9=

13.9%or14%rounded upHope this helps.

23Many thanks

140BracketsOrder / IndexDivisionMultiplicationAdditionSubtraction32That order being:

-Brackets

-Indices/Orders

-Division

-Multiplication

-Addition

-Subtraction

or BIDMAS/BODMAS is a good way to remember it.

32