The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 60 g |
45¢ |
55¢ |
Every additional 10 g |
15¢ |
20¢ |
Tim paid $5.35 for posting a package overseas. What was the greatest possible mass of the package that Tim posted?
$1 = 100¢
$5.35 = 5.35 x 100 = 535¢
Amount that Tim paid for the additional sets of 10 g for the overseas package
= 535 - 55
= 480¢
Number of sets of 10 g that Tim paid for the overseas package
= 480 ÷ 10
= 48
Mass of 48 sets of 10 g for the overseas package
= 48 x 10
= 480 g
Greatest possible mass of the overseas package
= 60 + 480
= 540 g
Answer(s): 540 g