PSLE A correction tape costs $2 less than a marker. The total cost of 5 such correction tapes is $2
y.
- Express the cost of 20 such correction tapes in terms of y.
- Express the cost of the marker in terms of y.
(a)
Number of sets of 5 correction tapes in 20 correction tapes
= 20 ÷ 5
= 4
Cost of 20 correction tapes
= 4 x 2
y = $8
y (b)
Cost of a correction tape
= 2
y ÷ 5
= $
2y5 Cost of a marker
=
2y5 + 2
=
2y5 +
105= $(
2y + 105)
Answer(s): (a) $8
y; (b) $(
2y + 105) or $(
2y5 + 2)