The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 50 g |
35¢ |
95¢ |
Every additional 10 g |
15¢ |
40¢ |
Perry paid $4.55 for posting a package locally. What was the greatest possible mass of the package that Perry posted?
$1 = 100¢
$4.55 = 4.55 x 100 = 455¢
Amount that Perry paid for the additional sets of 10 g for the local package
= 455 - 35
= 420¢
Number of sets of 10 g that Perry paid for the local package
= 420 ÷ 10
= 42
Mass of 42 sets of 10 g for the local package
= 42 x 10
= 420 g
Greatest possible mass of the local package
= 50 + 420
= 470 g
Answer(s): 470 g