How To Add Old Pounds, Shillings and Pence

” … You should add this …”

– The Adventure of The Musgrave Ritual (MUSG)

It’s surprising to realize that it has been nearly 45 years since Great Britain switched over to a decimalized coinage.  If you saw the figure 7s3d and wanted to add 4s11d, would you know how to add those two numbers?

Jim Coroneos of Crystal Clear Mathematics made an informative video on the topic and we present it below.

So after watching this video, hopefully we agree that the answer to the earlier stated question is 12s2d.