Is this right?

If I mix 50/50

80% PG / 20% VG doubler
with
50% PG / 50% VG nicotine
equals
65% PG / 35% VG

or

80% PG / 20% VG doubler
with
/ 100% VG nicotine
equals
40% PG / 60% VG

or

80% PG / 20% VG doubler
with
60% PG / 40% VG nicotine
equals
70% PG / 30% VG

Anyone catch my drift? Am I right?

 

Yep they're all correct!

If you're mixing two liquids together at 50/50, all you need to do is half the PG&VG ratios of each liquid and add them together.

For example.

@ 50/50:

50%PG/50%VG
+ 60%PG/40%VG

1/2 of each =

25%PG/25%VG
30%PG/20%VG

add them together:

25%PG + 30%PG = 55%PG
25%VG + 20%VG = 45%VG


Done, it's that simple!