When tidying up, I came across my old weekly test book from 1959 when I was learning my trade at Wray Castle maritime college. I could never figure out how to use log tables

and all my working was done the long and laborious way. I was amused to find this maths problem where I came up with the correct answer, but lost five points for scruffy and untidy layout!

I see that I have included the mysterious "Q" so I must have know what it meant once!
Bob