Updated 10/5/2017 2:19pm – Hi naguruji, yes, you are correct. Mathematical LCM of 6 and 3 is 6. I’m mathematically wrong earlier. I used 18u earlier in above working, because:
After getting units for 5/6, I must be able to divide the numerator 5 parts into 3.
If I use 6u, I get 5u in 5/6, which is inconvenient to be divided into 3.
If I use 12u, I get 10u in 5/6, which also is inconvenient to be divided into 3.
If I use 18u, I get 12u in 5/6, which can be conveniently divided into 3. So I shall be corrected to say that a convenient unit to use is 6 x 3 = 18u. Corrected in above original working above. Thanks for pointing out.
Rest assure that even if inconvenient no. of units is chosen, it can still work as shown in below reworked example using 6p.
Below for illustration only:
Step 2: Think for a “convenient” number of u (Mathematical LCM of 6 and 3 is 6p – corrected, but not so convenient below)
Step 3: Input the no. of units., analyse the branch diagram… and Solve
All money (#1. 6p)
Donate 1/6+$12 (#2. 6p+12) Remainder 5/6-$12( #3. 5p-12)
Meal 2/3 +$26 (#4. 10p/3-8+26) Left ($83)(#5.=5p/3-4-26)
See #5. 83 = 5p/3-4-26 –> p=67.80
At first = 6p = $406.80#