Answer
(answers will vary)
Possible reasons why the sales decreased from 2010 to 2011:
(1) Refresh Salon and Day Spa failed to introduce new and better services and/or product so some customers did not return anymore.
(2) Customer service did not improve (or deteriorated) so some regular customers stopped coming.
Possible reasons why the sales increased from 2011 to 2013:
(1) Refresh Salon and Day Spa introduced new and better services and/or product so more customers, old and new, started to avail of its services and products.
(2) Customer service had a significant improvement that more customers started to avail of the its products and services.
Work Step by Step
(answers will vary)
There are a number of different possible reasons why the sales decreased from 2010 to 2011 and why the sales increased from 2011 to 2013.
Possible reasons why the sales decreased from 2010 to 2011:
(1) Refresh Salon and Day Spa failed to introduce new and better services and/or product so some customers did not return anymore.
(2) Customer service did not improve (or deteriorated) so some regular customers stopped coming.
Possible reasons why the sales increased from 2011 to 2013:
(1) Refresh Salon and Day Spa introduced new and better services and/or product so more customers, old and new, started to avail of its services and products.
(2) Customer service had a significant improvement that more customers started to avail of the its products and services.
