Question
PSLE
A folder costs $3 more than a pencil. The total cost of 7 such folders is $3k.
  1. Express the cost of 28 such folders in terms of k.
  2. Express the cost of the pencil in terms of k.
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

PSLE
A folder costs $3 more than a pencil. The total cost of 7 such folders is $3k.
  1. Express the cost of 28 such folders in terms of k.
  2. Express the cost of the pencil in terms of k.