PSLE A correction tape costs $4 more than a stapler. The total cost of 4 such correction tapes is $5
k.
- Express the cost of 12 such correction tapes in terms of k.
- Express the cost of the stapler in terms of k.
(a)
Number of sets of 4 correction tapes in 12 correction tapes
= 12 ÷ 4
= 3
Cost of 12 correction tapes
= 3 x 5
k = $15
k (b)
Cost of a correction tape
= 5
k ÷ 4
= $
5k4 Cost of a stapler
=
5k4 - 4
=
5k4 -
164= $(
5k - 164)
Answer(s): (a) $15
k; (b) $(
5k - 164) or $
5k - 164 or $(
5k4 - 4)