And completely unrelated.... Yesterday in pre-calculus I introduced converting from degrees/minutes/seconds to decimal degrees, and vice versa. Here is a paraphrase of the class starter problem I gave today:
Prior to 1969, Great Britain didn't use a decimal system for money like they do (and almost every other country does) today. Their system was:No, pre-decimal British money has nothing to do with angles, but the method of calculation is the same as that of degrees/minutes/seconds to decimal degrees. I just wanted to see if my students could make the connection, and to my delight, most did.
12 pence = 1 shilling
20 shillings = 1 pound
If an item cost £3 5s 4p, how many decimal pounds did it cost?