Originally Posted by

**JQ2009** I'm not sure now. I never wrote down my working for that part I punched it all into the calculator though I some how ended up with:

loga 2122/1000 = 53/320

so a^53/320 = 2122/1000

so a = root 53/320 of 2122/1000 (I'm not sure if thats expressed correctly).

But no matter what working I do now I cannot get 2122/1000, I must have made a mistake somewhere as doing what I though I'd done.

Also I don't understand how you are getting 1/8 rather than a 1/16, could you explain that please?

Anyway taking what you have up there I and doing what I did above I got 123.36