The table shows the postage rates by mass for delivery of parcels.
- How much is the postage if a parcel has a mass of 350 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 350 g
= 3.60 + 0.30
= $3.90
(b)
1 kg = 1000 g
2.4 kg = 2.4 x 1000 = 2400 g
Cost for first 300 g = $3.60
Remaining mass
= 2400 - 300
= 2100 g
Number of sets of 50 g
= 2100 ÷ 50
= 42
Cost for remaining 2100 g
= 42 x 0.30
= $12.60
Postage cost of the parcel with a mass of 2.4 kg
= 12.60 + 3.60
= $16.20
Answer(s): (a) $3.90 (b) $16.20