PSLE A correction tape costs $2 less than a file. The total cost of 9 such correction tapes is $5
m.
- Express the cost of 36 such correction tapes in terms of m.
- Express the cost of the file in terms of m.
(a)
Number of sets of 9 correction tapes in 36 correction tapes
= 36 ÷ 9
= 4
Cost of 36 correction tapes
= 4 x 5
m = $20
m (b)
Cost of a correction tape
= 5
m ÷ 9
= $
5m9 Cost of a file
=
5m9 + 2
=
5m9 +
189= $(
5m + 189)
Answer(s): (a) $20
m; (b) $(
5m + 189) or $(
5m9 + 2)