Question
PSLE
A file costs $1 more than a ruler. The total cost of 9 such files is $4y.
  1. Express the cost of 18 such files in terms of y.
  2. Express the cost of the ruler in terms of y.
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 $1 more than a ruler. The total cost of 9 such files is $4y.
  1. Express the cost of 18 such files in terms of y.
  2. Express the cost of the ruler in terms of y.