The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 40 g |
45¢ |
85¢ |
Every additional 10 g |
20¢ |
35¢ |
Xavier paid $4.95 for posting a package overseas. What was the greatest possible mass of the package that Xavier posted?
$1 = 100¢
$4.95 = 4.95 x 100 = 495¢
Amount that Xavier paid for the additional sets of 10 g for the overseas package
= 495 - 85
= 410¢
Number of sets of 10 g that Xavier paid for the overseas package
= 410 ÷ 10
= 41
Mass of 41 sets of 10 g for the overseas package
= 41 x 10
= 410 g
Greatest possible mass of the overseas package
= 40 + 410
= 450 g
Answer(s): 450 g