The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 70 g |
75¢ |
95¢ |
Every additional 10 g |
35¢ |
40¢ |
Zane paid $5.25 for posting a package overseas. What was the greatest possible mass of the package that Zane posted?
$1 = 100¢
$5.25 = 5.25 x 100 = 525¢
Amount that Zane paid for the additional sets of 10 g for the overseas package
= 525 - 95
= 430¢
Number of sets of 10 g that Zane paid for the overseas package
= 430 ÷ 10
= 43
Mass of 43 sets of 10 g for the overseas package
= 43 x 10
= 430 g
Greatest possible mass of the overseas package
= 70 + 430
= 500 g
Answer(s): 500 g