Question
PSLE
A ruler costs $2 less than a correction tape. The total cost of 7 such rulers is $5y.
  1. Express the cost of 21 such rulers in terms of y.
  2. Express the cost of the correction tape 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 ruler costs $2 less than a correction tape. The total cost of 7 such rulers is $5y.
  1. Express the cost of 21 such rulers in terms of y.
  2. Express the cost of the correction tape in terms of y.