Question
Mrs Lui paid a total of $49 for 2f pens and 4 pencils. Each pen cost $3.
  1. Express the cost of 1 pencil in terms of f
  2. If f = 6, how much did each pencil cost? 
3 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Mrs Lui paid a total of $49 for 2f pens and 4 pencils. Each pen cost $3.
  1. Express the cost of 1 pencil in terms of f
  2. If f = 6, how much did each pencil cost?