Advanced Math/Per Year Per $1000 & Per $1000 Per Year
How are the following expressed mathematically?
1. $35.69 per year per $1000
2. $17.65 per $1000 per year
Is 1. ($35.69/year)/$1000 or $35.69/(year/$1000) and is 2. ($17.65/$1000)/year or $17.95/($1000/year)
I thank you for your reply.
The expressions mean the same for both cases. I mean that, for instance, the first statement simply means $35.69 for every year for every $1000 which is the same as saying $35.69 for every $1000 for every year.
(A/B)/C = A/(BC)
which is the same as
(A/C)/B = A/(BC)
A/(B/C) = (AC)/B
So, $35.69/(year/$1000) would be incorrect and so would $17.95/($1000/year). The positions of the bracket signs are important, algebraically.
I hope this helps you, let me know otherwise.