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Workings

Hints
The first letters of the words are: W, E, S, A, S, C, O, T, W, A.

Answers
Windbreak, eiderdown, sometimes, afternoon, September, carpenter, offensive, telephone, Wednesday, apartment.
win + dbr + eak = windbreak
eid + erd + own = eiderdown
som + eti + mes = sometimes
aft + ern + oon = afternoon
sep + tem + ber = september
car + pen + ter = carpenter
off + ens + ive = offensive
tel + eph + one = telephone
wed + nes + day = wednesday
apa + rtm + ent = apartment

Workings

Hint
A little algebra might help.

Answer
Pineapple = 83p, coconut = 57p, melon = 62p.

Reasoning
If we assign the letters P, C and M to the fruits, and work in pence we have:

(1)   M + C = 119
(2)   M + P = 145
(3)   C + P = 140

Using (2) − (1) we have:

(4)   P − C = 26

And (3) + (4) gives:

         2P = 166
          P = 83

This can then be substituted back into (2) and (3).

Workings

Hint
The first letters of the words are: C, S, P, B. One of the vegetables is another word for rutabaga.

Answer
Carrot, swede, pea, bean.

Swede is another word for rutabaga.

Workings

Hint
The answer is in front of you.

Answer
M.

From the bottom row of a keyboard.