The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 40 g |
35¢ |
90¢ |
Every additional 10 g |
15¢ |
35¢ |
Ken paid $5.35 for posting a package locally. What was the greatest possible mass of the package that Ken posted?
$1 = 100¢
$5.35 = 5.35 x 100 = 535¢
Amount that Ken paid for the additional sets of 10 g for the local package
= 535 - 35
= 500¢
Number of sets of 10 g that Ken paid for the local package
= 500 ÷ 10
= 50
Mass of 50 sets of 10 g for the local package
= 50 x 10
= 500 g
Greatest possible mass of the local package
= 40 + 500
= 540 g
Answer(s): 540 g