Question
PSLE
A file costs $4 less than a post-it pad. The total cost of 7 such files is $3v.
  1. Express the cost of 21 such files in terms of v.
  2. Express the cost of the post-it pad in terms of v.
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

PSLE
A file costs $4 less than a post-it pad. The total cost of 7 such files is $3v.
  1. Express the cost of 21 such files in terms of v.
  2. Express the cost of the post-it pad in terms of v.