I believe the answer is <span> (b - 1) • (8b - 1)</span>
I belive HN is equal to 19.
hope this helps!!
So assuming that 40=100%
66=x%
so
40 and 66
divide by 2
20 and 33
multiply by 5
100 and 165
so 100 is 100% and 165=165%
165-100=65
it is a 65% increase
But I hope someone answers u 2920
You can look for a factor of a 3 or 5 within the values 16 and 24.
24 can be factored as 3*8.
So you can break up the 24 in that way before multiplying,
and then have the 3's divide evenly out,
leaving you with a simpler problem.

Is this what you were looking for perhaps?