Question
PSLE
A ruler costs $4 more than a pencil. The total cost of 5 such rulers is $3b.
  1. Express the cost of 10 such rulers in terms of b.
  2. Express the cost of the pencil in terms of b.
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

PSLE
A ruler costs $4 more than a pencil. The total cost of 5 such rulers is $3b.
  1. Express the cost of 10 such rulers in terms of b.
  2. Express the cost of the pencil in terms of b.