The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 50 g |
45¢ |
75¢ |
Every additional 10 g |
20¢ |
35¢ |
Owen paid $5.35 for posting a package overseas. What was the greatest possible mass of the package that Owen posted?
$1 = 100¢
$5.35 = 5.35 x 100 = 535¢
Amount that Owen paid for the additional sets of 10 g for the overseas package
= 535 - 75
= 460¢
Number of sets of 10 g that Owen paid for the overseas package
= 460 ÷ 10
= 46
Mass of 46 sets of 10 g for the overseas package
= 46 x 10
= 460 g
Greatest possible mass of the overseas package
= 50 + 460
= 510 g
Answer(s): 510 g