# Thread: need help with a formula

1. ## need help with a formula

Hello im feeling really stupid right now cause i cant seem to figure out how to arrange this formula its r=100-p/px365/d i have to find p dont know how to get it alone

2. Just for clarity, is this what you meant?
$r=\frac{100-p}{p} \cdot \frac{365}{d}$

If not, please use parentheses to be more clear.

3. yes it is thank you for taken time to help

4. $r=\frac{365(100-p)}{pd}$

First multiply both sides by pd: $prd = 365(100-p)$

Expand the right side: $prd = 36500 - 365p$

Move all p's to the same side and everything else on the opposite side: $prd + 365p = 36500$

Take p as common factor: $p(rd + 365) = 36500$

Divide both sides by (rd+365) and we're done.

5. thanks babe !!! gonna try that right now

6. Sorry to bug again but its not working ......... tear i keep getting a different number then what im suppose to get do you think we could work on the problem together ?? if yes ill give it to you right now if not thanks for all your help !!

A 91day treasury bill with a face value of 1 000 000 is sold to yield 5.35% at what price did the t bill sell if the yield was quoted by the market ??

there for .0535=100-p/p x 365/91 the answer in the book is 98.68372139