PSLE A correction tape costs $2 less than a glue. The total cost of 9 such correction tapes is $5
y.
- Express the cost of 27 such correction tapes in terms of y.
- Express the cost of the glue in terms of y.
(a)
Number of sets of 9 correction tapes in 27 correction tapes
= 27 ÷ 9
= 3
Cost of 27 correction tapes
= 3 x 5
y = $15
y (b)
Cost of a correction tape
= 5
y ÷ 9
= $
5y9 Cost of a glue
=
5y9 + 2
=
5y9 +
189= $(
5y + 189)
Answer(s): (a) $15
y; (b) $(
5y + 189) or $(
5y9 + 2)