The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 70 g |
45¢ |
95¢ |
Every additional 10 g |
15¢ |
40¢ |
Billy paid $4.85 for posting a package locally. What was the greatest possible mass of the package that Billy posted?
$1 = 100¢
$4.85 = 4.85 x 100 = 485¢
Amount that Billy paid for the additional sets of 10 g for the local package
= 485 - 45
= 440¢
Number of sets of 10 g that Billy paid for the local package
= 440 ÷ 10
= 44
Mass of 44 sets of 10 g for the local package
= 44 x 10
= 440 g
Greatest possible mass of the local package
= 70 + 440
= 510 g
Answer(s): 510 g