Question
PSLE
A pen costs $2 more than a ruler. The total cost of 5 such pens is $3f.
  1. Express the cost of 20 such pens in terms of f.
  2. Express the cost of the ruler in terms of f.
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

PSLE
A pen costs $2 more than a ruler. The total cost of 5 such pens is $3f.
  1. Express the cost of 20 such pens in terms of f.
  2. Express the cost of the ruler in terms of f.