Originally Posted by Downunderwonder
The formula gets mangled like that for two cabs.
The actual formula is the combined resistance equals the reciprocal of the sum of the reciprocals.
1/R = 1/R1 + 1/R2 + etc
Not 'mangled', it's easier for people to remember "product over sum" or "product divided by sum" than "reciprocal of 1/R1+1/R2+1/R3...".
If the result is the same, why is this a problem?