Question
PSLE
A puncher costs $5 less than a pen. The total cost of 3 such punchers is $5n.
  1. Express the cost of 12 such punchers in terms of n.
  2. Express the cost of the pen in terms of n.
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

PSLE
A puncher costs $5 less than a pen. The total cost of 3 such punchers is $5n.
  1. Express the cost of 12 such punchers in terms of n.
  2. Express the cost of the pen in terms of n.