hi guyz

i need the solution to that problem ASAP plz

10% more than 10% less than x is what percent of 10 x?

any ideas !

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- Mar 14th 2009, 03:19 PMsehscomplicated problem , who's gonna be the brainy here ?
hi guyz

i need the solution to that problem ASAP plz

10% more than 10% less than x is what percent of 10 x?

any ideas ! - Mar 14th 2009, 04:46 PMmollymcf2009
- Mar 14th 2009, 05:14 PMwytiaz
- Mar 14th 2009, 05:14 PMe^(i*pi)
If we start with 10x then 10% less ie 90% of the original value we get

10x(1-0.1) = 9x

We then put 10% back on, but now it will be 10% of the 9x so we won't get 10x but rather:

9x(1+0.1) = 9.9x.

In one step it would be

10x(1-0.1)(1+0.1) which is the difference of two squares and simplifies to 10(1-0.01) = 9.9 - Mar 16th 2009, 10:52 AMsehs
thx much guyz