The table shows the postage rates by mass for delivery of parcels.
- How much is the postage if a parcel has a mass of 700 g?
- How much is the postage if a parcel has a mass of 2.4 kg?
(a)
Postage cost of the parcel with a mass of 700 g
= 2.60 + 0.30
= $2.90
(b)
1 kg = 1000 g
2.4 kg = 2.4 x 1000 = 2400 g
Cost for first 650 g = $2.60
Remaining mass
= 2400 - 650
= 1750 g
Number of sets of 50 g
= 1750 ÷ 50
= 35
Cost for remaining 1750 g
= 35 x 0.30
= $10.50
Postage cost of the parcel with a mass of 2.4 kg
= 10.50 + 2.60
= $13.10
Answer(s): (a) $2.90 (b) $13.10