Lanie04 Lanie04
  • 12-06-2014
  • Mathematics
Answered

the amount of postage placed on a first class letter depends on the weight of the letter .



Answer :

Poknoy Poknoy
  • 12-06-2014
amount is directly proportional to weight
thus
A = kw               A  =  amount
                           k  = constant      ^    which is price per gram
                           w =  weight
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