PSLE A correction tape costs $4 less than a file. The total cost of 8 such correction tapes is $3
n.
- Express the cost of 16 such correction tapes in terms of n.
- Express the cost of the file in terms of n.
(a)
Number of sets of 8 correction tapes in 16 correction tapes
= 16 ÷ 8
= 2
Cost of 16 correction tapes
= 2 x 3
n = $6
n (b)
Cost of a correction tape
= 3
n ÷ 8
= $
3n8 Cost of a file
=
3n8 + 4
=
3n8 +
328= $(
3n + 328)
Answer(s): (a) $6
n; (b) $(
3n + 328) or $(
3n8 + 4)