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Thread: Double miles from SEA/SLC to 20 destinations
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Old Feb 18, 2015 | 3:27 pm
  #35  
baliktad
Ambassador: Alaska Airlines
 
Join Date: Jul 2009
Location: Seattle
Programs: AS MVP Gold
Posts: 2,732
Originally Posted by AKLifetimeFlyer
You always add the multipliers together. For instance, double promo miles + double class of service + double status = 6X RDM miles.
Wow that is never how it's worked.

"Double" multipliers work as a "+100% of base" operator.

Base miles: X
Double promo miles: +100%
Double status miles: +100%
Double class of service miles: +100%

Total earnings: 400%, or 4X base miles
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