Brain Teasers and Puzzles 

Workings

Hint
Start with Betty, Mrs Kipper, and Ada, as these are three different people.

Answer
             Now     Last
Annie Ford   Red     Green
Betty Jester Blue    Red
Cybil Long   Green   Yellow
Diane Kipper Yellow  Blue

Reasoning
By (3), Betty currently has Blue flowers.
             Now     Last
Betty        Blue

By (4), Mrs Kipper currently has Yellow flowers, and used to have Blue.
             Now     Last
Betty        Blue
      Kipper Yellow  Blue

By (5), we know Annie Ford's name.
             Now     Last
Betty        Blue
      Kipper Yellow  Blue
Annie Ford

By (6), Mrs Kipper must be Diane, and the remaining person's name is Cybil.
             Now     Last
Betty        Blue
Diane Kipper Yellow  Blue
Annie Ford
Cybil

By (2), whoever currently has the Green flowers used to have Yellow, but by (5) this can't be Annie Ford, so this must be Cybil. Which means that Annie must currently have the Red flowers.
             Now     Last
Betty        Blue
Diane Kipper Yellow  Blue
Annie Ford   Red
Cybil        Green   Yellow

By (3), Betty isn't Mrs Long, so must be Mrs Jester. Therefore Cybil must be Mrs Long.
             Now     Last
Betty Jester Blue
Diane Kipper Yellow  Blue
Annie Ford   Red
Cybil Long   Green   Yellow

By (1), Annie Ford must have previously had Green, and Betty Jester had Red.
             Now     Last
Betty Jester Blue    Red
Diane Kipper Yellow  Blue
Annie Ford   Red     Green
Cybil Long   Green   Yellow

Workings

Hint
Try removing the spaces and punctuation.

Answers
ROME OR OSLO? ANDREW, JULIE, TO VISIT.
ROMEO ROSLO AND REW JULIET OVISIT
   = ROMEO AND JULIET

WARM TOO FEW, THE SUBWORLD SNEEZES
WAR MTO OF EW THE SUB WORLDS NEEZES
   = WAR OF THE WORLDS

AN I MALL? SHOPS, FAR MALLS?
ANIMAL LSHOPS FARM ALLS
   =ANIMAL FARM

GO NEXT, GO! WITHOUT OTHER I DWINDLE. GO!
GONE XTGO WITH OUTO THE RID WIND LEGO
   = GONE WITH THE WIND

WATER. SHIP, BOAT. STORM! DOWN RAIN!
WATERSHIP BOATSTORM DOWN RAIN
   = WATERSHIP DOWN

BRAVERY IN A NEW AGE, WORLD'S HOPE.
BRAVE RYINA NEW AGE WORLD SHOPE
   = BRAVE NEW WORLD

Workings

Hint
A little algebra might help.

Answer
I will be 35 in 14 years.

Reasoning
I am currently 21.

If X is my current age, then:
  X = 14 +  X
           ———
            3
so

   2X = 14
  ———
   3

and

  2X = 42

So

  X = 21

I am currently 21 and my favourite book is currently 14 years old, when it is 28 years old (double its age) I will be 35.

Workings

Hint
Try removing some letters.

Answer
Carrot.

Reasoning
Each of the other words remains a real word if you remove the first and last letter:
s-event-y b-raw-l c-love-r p-rope-r c-arro-t * s-win-g e-merge-d c-raft-y t-rave-l s-acre-d s-ton-e p-lung-e