Question
PSLE
A file costs $4 more than a marker. The total cost of 9 such files is $5z.
  1. Express the cost of 18 such files in terms of z.
  2. Express the cost of the marker in terms of z.
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 more than a marker. The total cost of 9 such files is $5z.
  1. Express the cost of 18 such files in terms of z.
  2. Express the cost of the marker in terms of z.