PSLE A correction tape costs $3 more than a notebook. The total cost of 9 such correction tapes is $4
y.
- Express the cost of 36 such correction tapes in terms of y.
- Express the cost of the notebook in terms of y.
(a)
Number of sets of 9 correction tapes in 36 correction tapes
= 36 ÷ 9
= 4
Cost of 36 correction tapes
= 4 x 4
y = $16
y (b)
Cost of a correction tape
= 4
y ÷ 9
= $
4y9 Cost of a notebook
=
4y9 - 3
=
4y9 -
279= $(
4y - 279)
Answer(s): (a) $16
y; (b) $(
4y - 279) or $
4y - 279 or $(
4y9 - 3)