I understand the 2/30, but I'm not entirely sure where the 15/30 comes from.
EDIT: Ah, I understand what you're trying to do: You wanted to calculate 1/15 – 1/2 and multiply the result by 12/360.
But don't forget that the first order of magnitude is the most important factor! You first need to calculate 1/2 * 12/360 and subtract the result from 1/15.
You come from
on:
I understand the 2/30, but I'm not entirely sure where the 15/30 comes from.
EDIT: Ah, I understand what you're trying to do: You wanted to calculate 1/15 – 1/2 and multiply the result by 12/360.
But don't forget that the first order of magnitude is the most important factor! You first need to calculate 1/2 * 12/360 and subtract the result from 1/15.
OK thanks
Is done there
1/15-1/2*12*360 =1/15-1/2*12/360=1/15-1/2*1/3=1/15-1/6=2/30-15/30
1/6 = 15/30?
You're right! I was misled by the "result"!